Specifications

16-406 | OWNER’S GUIDE
EPAD2-TH8-X and CPAD2-TH8-X
Intelligent amplier with integrated 24-bit A/D conversion
8 input channels for thermocouple types J, K, T, and U (universal)
Inputs isolated to 350 VDC
Modules daisy-chain together to add more and more channels
EPAD2 series uses RS485 interface
CPAD2 series uses CAN 2.0B interface
Specications
Parameter EPAD2-TH8-x and CPAD2-TH8-x
Input channels: 8 isolated thermocouple channels
Input signals:
thermocouple types depending on module
J: -210 °C to 1200 °C
K: -270 °C to 1372 °C
T: -270 °C to 400 °C
U: Supports types K, J, T, E, R, S, B, N, C, and U
Sample rate: 12.5 S/s/ch maximum
-3 dB bandwidth: 6 Hz
ADC type:
Sigma delta ADC per channel, 24-bit
(Note: CPAD2 outputs CAN data at 16-bits)
Input connector:
Standard “mini” thermocouple connector, polarized, color coded
Type K: yellow
Type J: black
Type T: blue
Type U: white
Resolution: 0.01 °C for all types
Input impedance: typically 1.4 MΩ
Bias current: typically 10 nA
Open thermocouple detection: module indicates fullscale if input is open
Accuracy:
Thermocouple type J
Thermocouple type K
Thermocouple type T
Thermocouple type U
±1.0 °C @ -210 to -100 °C ±0.3 °C @ -100 to 760 °C ±0.4 °C @ 760 to 1200 °C
±1.0 °C @ -200 to -25 °C ±0.4 °C @ -25 to 1000 °C ±0.5 °C @ 1000 to 1372 °C
±1.0 °C @ -250 to -150 °C ±0.4 °C @ -150 to 400 °C
Varies according to the T/C type and range, but accuracy ±1.4 °C, typ. ±0.7 °C
Temperature drift: typically 20 ppm/°C
Isolation voltage: 350 VDC (channel to channel and channel to Bus, Power and Chassis)
Over-voltage protection: 15 VDC
CMRR @ 50/60 Hz: 130 dB
Interface:
EPAD2 series: RS485
CPAD2 series: CAN BUS 2.0B protocol
Read-out speed:
EPAD2 series: typ. 80 ch/sec.
CPAD2 series: 12.5Hz, 10Hz, 5Hz, 2Hz, 1Hz, 0.5Hz, 0.2Hz or 0.1 Hz programmable
Bus power connector: LEMO EGG.1B.304
Power supply voltage: 7 to 40V
Power consumption: 0.5 W maximum
Dimensions:
Base module (W x D x H)
Mounting holes distance:
129 x 72 x 34.2 mm (5.1 x 2.8 x 1.3 in.) incl. mounting holes
119 x 7 mm (4.7 x 0.3 in.), 4.2 mm (0.165 in.) diameter
Weight: 360 g typical