Watlow Optimizing Your Process System with the Series 988 Controller - Manual (Page 50)

Specifications
Optimizing Your Process System with the WATLOW Series 988
6.2
988 FAMILY INPUT TYPES Input 1 Input 2 Input 3
0-none
1-basic signal conditioner
type: J, K, T, N, C, D, Pt 2
high temperature
moderate sensor accuracy and stability
low and high range
low sensor cost
2-universal signal conditioner
process input
0-5VDC, 1-5VDC, 0-10VDC, 0-50mVDC,
0-100mVDC, 0-20mA, 4-20mA
non-thermal applications
sensor determines accuracy and stability
long leads of transducer output
low and high range
best sensor noise immunity
moderate to high sensor cost
resistance temperature detector (RTD)
100-ohm platinum
type: 1
° JIS or DIN, 0.1° JIS or DIN
high sensor accuracy and stability
low range, moderate sensor cost
thermocouple
type: J, K, T, N, R, S, B, C, D, Pt 2
high temperature
moderate sensor accuracy and stability
low and high range
low sensor cost
3-slidewire feedback
0- to 1200-ohm range
determines valve position
sensor determines accuracy and stability
moderate sensor cost
4-heater current transformer
50mA transformer secondary maximum
reads heater current
moderate sensor accuracy and stability
additional ranges may be available
moderate sensor costs
5-digital event
dry switch or DC volts input standard
0-3VDC (open) to 14-36VDC (closed) input 2
0-3VDC (closed) to 14-36VDC (open) input 3
no to low cost
Input Table
option available if shaded