LFI3751 Analog Temp Controller 5A @ 40W with RS-232

The advanced and reliable circuitry of the HTC Series achieves 0.0009°C temperature stability. Its low profile package is ideal for designs with space constraints. The ultrastable linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency. The HTC1500 drives up to 1.5 A for either Thermoelectrics (bipolar) or Resistive Heaters (unipolar). The HTC3000 drives up to ±3 A. An evaluation board simplifies prototyping: HTCEVALPCB. A heatsink that mounts directly to the HTC is available: HTCHTSK. The HTC1500 is designed for 0.031" thick printed circuit boards (PCBs). The HTC1500-62 is designed for 0.062" thick PCBs. The HTC Series temperature controllers are easily configured for any design. Virtually any type of temperature sensor can be used with the HTC and a built in sensor bias current source simplifies use with resistive temperature sensors. The independently adjustable Proportional Gain (P) and Integrator Time Constant (I) can be modified to optimize temperature overshoot and stability.Other features offer added flexibility. A single resistor sets the maximum output current to load. Add a diode to operate resistive heaters with a unipolar output current. An onboard reference voltage simplifies potentiometer control of the temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage.The HTC1500 has proven reliable in such diverse fields as medical, defense, communications and manufacturing. The HTC is particularly suited to applications where temperature is scanned across ambient. Key Features Compact Size - 1.5 and 3.0 A Models Interfaces with Thermistors, IC Sensors, &RTDs Single supply operation +5 V to +12 VDC (contact factory for higher voltage operation) +11 V compliance with +12 V input Stabilities as low as 0.0009°C Temperature Setpoint, Output Current Limit, Sensor Bias, Proportional Gain, and Integrator Time Constant are User Adjustable Monitor outputs for Temperature Setpoint and Actual Temperature Linear Bipolar or Unipolar Output operates thermoelectrics or resistive heaters

The robust circuitry of the PID1500 achieves 0.003°C temperature stability. Onboard controls make this package plug and play. The linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency. The PID1500 drives up to 1.5 A for either Thermoelectrics (bipolar) or Resistive Heaters (unipolar). An evaluation board simplifies prototyping: PIDEVALPCB. Heatsinking is already provided to support operation across a -20°C to +85°C operating range. The PID1500 temperature controller is easily configured for any design. Virtually any type of temperature sensor can be used with the PID1500 and a built in switchable sensor bias current source simplifies use with resistive temperature sensors. The Proportional Gain (P) is adjustable with an onboard single turn trimpot. Use an onboard trimpot to adjust the setpoint or the Analog Input pin for  remote control. Use another onboard trimpot to set the maximum output current to the load or set it with a resistor between pins 1 & 2. A switch between those pins acts as a remote enable / disable. Remove a jumper to operate resistive heaters with a unipolar output current. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage.The PID1500 has proven reliable in such diverse fields as spectroscopy, defense, and medical research. Key Features Single supply operation: +5 V to +12 V Up to 1.5 A output current available < 0.005°C stability (24-hour) Adjustable current limit Remote Analog Input to adjust Temperature Setpoint Supports Thermistors, IC Sensors, or RTDs Temperature Setpoint, Proportional Gain, and Current Limit are user adjustable Remotely Enable/Disable output Can be wired for Resistive Heater control

The advanced and reliable circuitry of the HTC series achieves 0.0009°C temperature stability. Its small, low profi le package is ideal for designs with space constraints. The linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency.The HTC temperature controllers are easily configured for any design. Virtually any type of temperature sensor can be used with the HTC and a built in sensor bias current source simplifi es use with resistive temperature sensors. The independently adjustable Proportional Gain (P) and Integrator Time Constant (I) can be modifi ed to optimize temperature overshoot and stability.Other features offer added flexibility. A single resistor sets the maximum output current to your load. Add a diode to operate resistive heaters with a unipolar output current. An onboard reference voltage simplifies potentiometer control of the temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage. Key Features Compact Size - 1.5 and 3.0 A Models Interfaces with Thermistors, IC Sensors, & RTDs Single supply operation +5 V to +12 VDC (contact factory for higher voltage operation) +11 V compliance with +12 V input Stabilities as low as 0.0009°C Temperature Setpoint, Output Current Limit, Sensor Bias, Proportional Gain, and Integrator Time Constant are User Adjustable Monitor outputs for Temperature Setpoint and Actual Temperature Linear Bipolar or Unipolar Output operates thermoelectrics or resistive heaters

The PTC-CH Series Chassis Mount Temperature Controllers deliver the precision performance and long-term reliability you expect from a Wavelength Electronics temperature controller. PTC-CH Series controllers are found in such diverse applications as particle and droplet measurement, manufacturing machine vision systems, biomolecular interaction analysis, and more. They are CE certified. A PDF version of the Declaration of Conformance is available.PTC-CH controllers are available in different models so you can choose the one that best suits your application: PTC2.5K-CH delivers up to ±2.5 A output current PTC5K-CH for applications requiring up to ±5 A PTC10K-CH drives up to ±10 A PTC10K-SL can be tied to the 10 A driver to deliver a combined ±20 A output current The PTC-CH controllers operate from a single power supply between 4.5 V and 30 V. The linear bipolar controller drives a Peltier thermoelectric cooler or a resistive heater, and the chassis-mount package integrates easily into OEM applications. PTC-CH controllers interface with a variety of temperature sensors, and the bias current is adjustable in order to maximize controller sensitivity and stability for your application. The compact chassis-mount design simplifies heatsinking and requires minimal space. PTC-CH controllers are quick to configure for your prototype project, and there are no surprises when it's time to integrate the controller into the final design. If you are using a Quantum Cascade Laser or need low noise performance with a laser diode, we offer the PTC-CH nested in the QCL OEM drivers. Information is available here. Key Features Built-in features make your product more robust to real-world operating conditions and minimize your electronics overhead: If the optional remote temperature setpoint signal is lost, the controller defaults to a standard "safe" temperature setpoint (25ºC when a 10 kΩ thermistor is used). The safe temperature can be changed at the factory; call for details. An on-board trimpot is used to set the output current limit to prevent over-driving the TEC, and helps protect your load from thermal runaway situations. Proportional gain is easily adjusted with an on-board trimpot. Low temperature coefficient design remains stable across a wide range of ambient conditions. When used with Wavelength's laser drivers, such as the PLD Series, these temperature controllers provide stable and reliable performance that sets your system apart from your competitors' and keeps your customers satisfied.

The PTC Series PCB-Mount Temperature Controllers are based on our long-proven PTC-CH linear controllers, and deliver the precision performance and reliability you expect from Wavelength Electronics. PTC Series controllers are found in such diverse applications as particle and droplet measurement, communications, manufacturing test, and medical systems.The PTC controllers operate from a single power supply between 5 V and 30 V, and two models drive ±5 A or ±10 A to a Peltier thermoelectric cooler or a resistive heater. These controllers mount directly to your circuit board. PTC controllers interface with a variety of temperature sensors, and the bias current is adjustable in order to maximize controller sensitivity and stability for your application. You can use the PTCEVAL board to quickly confi gure the PTC controller for prototyping. Using the same controller for development and production helps guarantee there are no surprises when it's time to integrate the final design. Key Features Drive ±5 or ±10 A of TEC or heater current Single supply operation: 5 to 30 VDC Small package: 2.32" x 2.15" x 3.85" Remote Output Enable and Temperature Setpoint controls Short term stability of 0.0012°C (off-ambient) Long term stability 0.002°C Selectable sensor bias current Adjustable current limit PI Control with "Smart Integrator" Failsafe Setpoint default in case of remote temperature setpoint signal error

The WTC3293-14001 is a mini-instrument temperature controller with a temperature (not resistance) display and onboard adjustments.Wrapped around the precision WTC3243 temperature controller, it is configured for use with a TCS610 thermistor. Wire your thermoelectric cooler and thermistor to the board with the cable provided. Add the appropriate DC power supply and indicate the input voltage on the jumper. With the output disabled, adjust the on-board 12-turn trimpot and watch the setpoint temperature change on the  4-digit display. Switch to Actual temperature and display your thermistor temperature. Watch the LED tree to see "over/under temperature" or "stable at setpoint" status. Enable the output current and watch the temperature quickly lock in on the setpoint.The green LED on the In-Range indicator lights when actual temperature is within 0.05°C of the setpoint. If the actual temperature exceeds the setpoint, the upper LED will light. If it is below the  setpoint temperature, the lower LED will light.The WTC3293-14001 has been designed to work with various thermoelectrics driving up to ±2.2 Amps. It operates with +7 V, +9 V, or +12 V input voltage. Key Features Low noise, maximum temperature stability commercially available Display thermistor temperature directly - no tables to convert resistance to temperature LED indicator shows over temperature, stable at setpoint, or under temperature status Adjust setpoint with a 12-turn potentiometer or an external voltage Control temperature using a 10 k© thermistor Fixed resistors set Proportional Gain, Integrator Time Constant, and thermoelectric current limits Enable/Disable Output Current Switch Includes Output Cable & DC Power Supply Works with a wide range of thermoelectrics

The WHY5640 is a general purpose, low cost, analog PI (Proportional, Integral) control loop for use in thermoelectric or resistive heater temperature control applications. The WHY5640 maintains  precision temperature regulation using an active resistor bridge circuit that operates directly with thermistors or RTD temperature sensors. Supply up to 2.2 Amps of heat and cool current to your thermoelectric from a single power supply. Accessories include a heatsink WHS302, thermal washer WTW002, and fans WXC303 (5 V), WXC304 (12 V), and an evaluation board WHY5690. Connect two or more WHY5640 units together and drive higher output currents. A single resistor or trimpot sets the temperature setpoint. Independent heat and cool current limits are set by single  resistors. A single resistor sets proportional gain. A resistor / capacitor in series sets the integrator time constant. Key Features +5 to +26 V Control Electronics Supply +4.5 to +30 V Power Drive Supply Low Cost 0.008 C Stability (typical) PI Temperature Control High ±2.2 Amps Output Current Control Above and Below Ambient Small Package Size

The WTC3243 is a compact, analog PI (Proportional, Integral) control loop circuit optimized for use in ultrastable thermoelectric temperature control applications. It easily handles variable operating conditions with a stability of better than 0.0009 ºC. The temperature setpoint is set by a remote voltage signal. It is capable of controlling both thermoelectric and resistive heaters, and only five external resistors are needed to optimize the controller for your specific application. The WTC3293 Evaluation Board is available to quickly integrate the WTC3243 into your system and can be optimized for sensor type. Use the adjustable trimpots to configure heat and cool current limits, proportional gain, and integrator time constant. The robust and reliable WTC3243 has been designed into electro-optical systems, airborne instrumentation, spectroscopic monitors, and medical diagnostic equipment. It is particularly well-suited to applications where temperature is scanned across ambient. Key Features Linear PI Control Stability of 0.0009°C Heat and Cool Current Limits Adjustable Sensor Bias Current Drive ±2.2 A of TEC or Resistive Heater Current Small Size of 1.3" X 1.28" X 0.313" Supports Thermistors, RTDs, and IC Sensors Single Supply Operation: +5 V to +30 V 14-pin DIP PCB Mount Monitor Actual Temperature Quickly and easily integrated with WTC3293 Evaluation Board

The PTC-CH Series Chassis Mount Temperature Controllers deliver the precision performance and long-term reliability you expect from a Wavelength Electronics temperature controller. PTC-CH Series controllers are found in such diverse applications as particle and droplet measurement, manufacturing machine vision systems, biomolecular interaction analysis, and more.The PTC-CH controllers operate from a single power supply between 4.5 V and 30 V, and a selection of models allows you to optimize the current output level for your application. The linear bipolar controller drives a Peltier thermoelectric cooler or a resistive heater, and the chassis-mount package integrates easily into OEM applications. PTC-CH controllers interface with a variety of temperature sensors, and the bias current is adjustable in order to maximize controller sensitivity and stability for your application.The compact chassis-mount design simplifies heatsinking and requires minimal space. PTC-CH controllers are quick to configure for your prototype project, and there are no surprises when it's time to integrate the controller into the final design.Practical Features For Real-World Conditions Built-in features make your product more robust to real-world operating conditions and minimize your electronics overhead: If the optional remote temperature setpoint signal is lost, the controller defaults to a standard "safe" temperature setpoint (25ºC when a 10 k© thermistor is used). The safe temperature can be changed at the factory; call for details. An on-board trimpot is used to set the output current limit to prevent over-driving the TEC, and helps protect your load from thermal runaway situations. Proportional gain is easily adjusted with an on-board trimpot. Low temperature coefficient design remains stable across a wide range of ambient conditions. When used with Wavelength's laser drivers, such as the PLD Series, these temperature controllers provide stable and reliable performance that sets your system apart from your competitors' and keeps your customers satisfied. Key Features Drive up to ±2.5, ±5.0, or ±10.0 A of linear bipolar TEC or heater current Add a booster unit to drive up to ±20.0 A Single supply operation: 5 to 30 VDC Small package: 3.0" x 3.2" x 1.1" Use a wide variety of temperature sensors Remote Output and Setpoint controls Short term stability: 0.0012°C Selectable sensor bias current Adjustable current limit Failsafe Setpoint default in case of remote temperature setpoint signal error

The advanced and reliable circuitry of the HTC series achieves 0.0009°C temperature stability. Its small, low profile package is ideal for designs with space constraints. The linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency.The HTC temperature controllers are easily configured for any design. Virtually any type of temperature sensor can be used with the HTC and a built in sensor bias current source simplifies use with resistive temperature sensors. The independently adjustable Proportional Gain (P) and Integrator Time Constant (I) can be modified to optimize temperature overshoot and stability.Other features offer added flexibility. A single resistor sets the maximum output current to your load. Add a diode to operate resistive heaters with a unipolar output current. An onboard reference voltage simplifies potentiometer control of the temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage. Key Features Compact Size - 1.5 and 3.0 A Models Interfaces with Thermistors, IC Sensors, & RTDs Single supply operation +5 V to +12 VDC (contact factory for higher voltage operation) +11 V compliance with +12 V input Stabilities as low as 0.0009°C Temperature Setpoint, Output Current Limit, Sensor Bias, Proportional Gain, and Integrator Time Constant are User Adjustable Monitor outputs for Temperature Setpoint and Actual Temperature Linear Bipolar or Unipolar Output operates thermoelectrics or resistive heaters

The advanced and reliable circuitry of the HTC series achieves 0.0009°C temperature stability. Its small, low profi le package is ideal for designs with space constraints. The linear, PI control loop offers maximum stability while the bipolar current  source has been designed for higher efficiency. The HTC temperature controllers are easily configured for any design. Virtually any type of temperature sensor can be used with the HTC and a built in sensor bias current source simplifies use with resistive temperature sensors. The independently adjustable Proportional Gain (P) and Integrator Time Constant (I) can be modifi ed to optimize temperature overshoot and stability. Other features offer added flexibility. A single resistor sets the maximum output current to your load. Add a diode to operate resistive heaters with a unipolar output current. An onboard reference voltage simplifi es potentiometer control of the  temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage. Key Features Compact Size - 1.5 and 3.0 A Models Interfaces with Thermistors, IC Sensors, & RTDs Single supply operation +5 V to +12 VDC (contact factory for higher voltage operation) +11 V compliance with +12 V input Stabilities as low as 0.0009°C Temperature Setpoint, Output Current Limit, Sensor Bias, Proportional Gain, and Integrator Time Constant are User Adjustable Monitor outputs for Temperature Setpoint andActual Temperature Linear Bipolar or Unipolar Output operates thermoelectrics or resistive heaters

The advanced and reliable circuitry of the HTC Series achieves 0.0009°C temperature stability. Its small, low profile package is ideal for designs with space constraints. The linear, PI control loop offers maximum stability while the bipolar current source has been designed for higher efficiency.The HTC Temperature Controllers are easily configured for any design. Virtually any type of temperature sensor can be used with the HTC and a built in sensor bias current source simplifies use with resistive temperature sensors. The independently adjustable Proportional Gain (P) and Integrator Time Constant (I) can be modified to optimize temperature overshoot and stability. Other features offer added flexibility. A single resistor sets the maximum output current to your load. An onboard reference voltage simplifies potentiometer control of the temperature setpoint. You can also choose to operate remotely with an external setpoint voltage. Two monitor pins provide access to the temperature setpoint voltage and the actual sensor voltage. Key Features Compact Size ±4.0 A Output Interfaces with Thermistors, IC Sensors, & RTDs Single supply operation +5 V to +12 V +10.8 V compliance with +12 V input Stabilities as low as 0.0009°C Temperature Setpoint, Output Current Limit, Sensor Bias, Proportional Gain, and Integrator Time Constant are User Adjustable Monitor outputs for Temperature Setpoint and Actual Temperature Linear Bipolar Output operates thermoelectrics