Tenney Junior - 7 Temperature Control; Controller Features

TENNEY ENVIRONMENTAL
Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4
Page 16
7.1 Controller Features
Temperature conditions are controlled with the standard profiling type Watlow 942 Controller. The alternate
Watlow F4 Controller may be used for more demanding applications. Both controllers are described below.
Watlow 942 Controller:
The Watlow 942 is a profiling type ¼ DIN controller with ramping and auto-tuning control. The following main
features are employed.
♦ Single Channel
♦ Profiling: Multiple Profiles, 24 Steps Max.
♦ Automatic & Manual Control
♦ 1 Input: Universal Type (RTD is Std.)
♦ 2 Control Outputs: Time Proportioned, or On / Off Control
♦ 2 Auxiliary Outputs - Optional: 1 or 2 Events, or 1 or 2 Alarms, or 1Retransmit w/Alarm, or w/Event
♦ Guaranteed Soak - Standard
♦ Communications: Serial - Optional
Watlow F4S Controller:
The Watlow F4S is a profiling type ¼ DIN controller with ramping and auto-tuning control. The following main
features are employed.
♦ Single Channel
♦ Profiling: Forty Profiles, 256 Steps
♦ Automatic & Manual Control
♦ 1 Input: Universal Type (RTD is Std.)
♦ 4 Digital Inputs
♦ 2 Auxiliary Analog Inputs - Optional
♦ 2 Control Outputs: Time Proportioned, On/Off, or 4-20 ma
♦ 2 Alarm Outputs
♦ 8 Digital Event Outputs
♦ 2 Retransmit Outputs - Optional
♦ Communications: EIA-232 and EIA-485 with Modbus RTU protocol
7.0 TEMPERATURE CONTROL