User manual
Table Of Contents
- Table of Contents
- 1 Before You Start 1
- 2 Introduction 7
- 3 Specifications and Environment Conditions 9
- 4 Quick Start 13
- 5 Parts and Controls 15
- 6 General Operation 17
- 7 Controller Operation 19
- 7.1 Target Temperature 19
- 7.2 Temperature Set-point 19
- 7.3 Temperature Scale Units 21
- 7.4 Scan 22
- 7.5 Set-point Resistance 23
- 7.6 Temperature Scale Units 23
- 7.7 Secondary Menu 23
- 7.8 Heater Power 23
- 7.9 Proportional Band 24
- 7.10 Controller Configuration 25
- 7.11 Operating Parameters 25
- 7.12 Serial Interface Parameters 26
- 7.13 Calibration Parameters 27
- 8 Digital Communication Interface 29
- 9 Calibration Procedure 35
- 10 Maintenance 39
- 11 Troubleshooting 41
- Figures
- Tables
Press the “SET” button to accept the new scan rate and continue.
S
Accept scan rate
7.5 Set-point Resistance
To display the Set-point Resistance, press the “SET” and “DOWN” buttons si
-
multaneously when the temperature is displayed. When the “SET” and
“DOWN” buttons are released the temperature is again displayed. This value
is used to calibrate the unit and is not adjustable.
7.6 Temperature Scale Units
To toggle between °C and °F, press the “SET” and “UP” keys simultaneously
when the temperature is displayed.
7.7 Secondary Menu
Functions used less often are accessed within the secondary menu. Press
and hold the “SET” and EXIT buttons to access the secondary menu. The
first function in the secondary menu is the heater power display. (See Figure
4onpage20.)
7.8 Heater Power
The temperature controller controls the temperature of the well by pulsing
the heater on and off. The total power being applied to the heater is deter-
mined by the duty cycle or the ratio of heater on time to the pulse cycle
time. By knowing the amount of heating the user can tell if the instrument
is heating “UP” to the set-point, cooling “DOWN”, or controlling at a constant
temperature. Monitoring the percent heater power lets the user know the
stability of the well temperature. With good control stability the percent
heating power should not fluctuate more than ±1% within one minute.
The heater power display is accessed in the secondary menu. Press and
hold the “SET” and “EXIT: buttons. The heater power is displayed as a per
-
centage of full power.
100.0 C Target temperature
S+E
Access heater power in percent
SEC Flashes for secondary menu and then displays the
heater power
23
7
Controller Operation