THERMOCOUPLE INPUT TRANSMITTERS
PLUG-IN MODULES, FIXED RANGE
JH4130: Thermocouple Input, Input/Output Isolated
JH4130L: Linearized Thermocouple Input, Input/Output Isolated
- Available for All Thermocouple Types
- Linearized Model Available
- Jumper-Selectable Upscale/Downscale Burnout
- Quick-Check Red/Green Output LEDs
- AC or DC Power Options
|
|
Model JH4130 provide a DC voltage or current proportional to millivolts produced by a thermocouple. Model JH4130L adds linearization to compensate for thermocouple nonlinearity, producing an output truly proportional to temperature. Both are fixed-range devices, precisely calibrated to your specified ranges at the factory.
Red-green Quick-Check LEDs give a quick indication of the relative output. Red is brighter at the low end, green at high, while at mid-scale both are approximately equal. Red-only indicates offscale low while green-only indicates offscale high.
An internal jumper allows upscale or downscale indication upon thermocouple burnout (factory set for upscale unless otherwise specified on your order). Available options include AC or DC power choices and reverse-action Option RT (decreasing output with increasing input).
ORDERING INFORMATION
| Model Number: |
Select from the list above. Add suffix –AC for AC power or –DC for DC power. |
| Thermocouple Type: |
Specify type J, K, T, E, R, S, B or N, or contact factory for others. |
| Input Range: |
Specify any range corresponding to 4mV or higher span. (4mV equals 100 deg C for type K thermocouples.) |
| T/C Burnout Indication: |
Specify upscale (offscale high) or downscale (offscale low) burnout indication. Will be set for upscale if not specified on your order. |
| Output Range: |
Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below. |
| Power: |
Specify 115Vac, 230Vac, 12Vdc or 24Vdc. |
| Reverse-Acting Transmitter: | Specify Option RT.
(decreasing output with increasing input) |
| Loop-Powered Output: |
4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Specify Option LPO. |
INSTALLATION AND CONNECTIONS
These transmitters plug into any standard 8-pin circular ("octal") relay socket. JH Technology offers two sockets: DS008 for DIN-rail or surface mounting and ST008 for Snap-Track mounting (see the Accessories page).
The thermocouple connects to a small terminal block (which also includes cold junction compensation) on the side of the module. The remaining pin connections are:
Pin 1: Power (AC or, if DC power option, DC plus).
Pin 2: No connection.
Pin 3: Power (AC or, if DC power option, DC minus).
Pin 4: No connection.
Pin 5: No connection.
Pin 6: No connection.
Pin 7: Output plus.
Pin 8: Output minus.
DETAILED SPECIFICATIONS
| Input Capabilities: |
Any input span 4mV or higher. Offset ranges are allowed. |
| Input Thermocouple Type: |
Any standard thermocouple type (J, K, T, E, R, S, B, N). Others possible – contact factory. |
| Thermocouple Burnout Indication: |
Jumper-selectable upscale (offscale high) or downscale (offscale low). Factory set for upscale unless otherwise specified. |
| Voltage Output Capabilities: |
1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output). |
| Current Output Capabilities: |
1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output). |
| Endpoint Accuracy (factory calibration): |
+/-0.1% of span or better (or, on narrow spans, +/-0.2 deg C or 20 microvolts, whichever is greater). |
| Adjustability: |
Zero and span each are adjustable approx. +/-15% of span. |
| Response Time: |
Under 100 milliseconds. |
| Isolation: |
Power, 1,500Vac rms (2,100V peak). Input/Output, 1,000Vac rms (1,400V peak). |
| Guaranteed Operating Temperature: |
-10 to +60 deg. C (14 to 140 deg. F). |
| Temperature Stability: |
+/-(0.02% of span plus 1.3 microvolts) per deg. C, or better. |
| Power Requirements: |
AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W. |