YOKOGAWA MC43 User Manual

<Appendix2.ThermalElements>
A2-2
IM 02M04B01-01EN
(5) Installing Temperature Bulb
FA0205.ai
In Pipe Line, Using Bushing or Well
Tapped hole in pipe
Half coupling welded to pipe
Well
Adjustable union
(AB type)
Fixed union
(FB type)
FA0206.ai
In Kettle or Retort
Adjustable union (AB type)
Only when strict sealing is
not required
Fixed union
(FB type)
Plain bulb
(NB type)
FA0207.ai
In Lagged (Insulated) Pipe Line
Lagging
Well with lagging
extension
Plug of insulation
held in cloth
FA0208.ai
In Duct or Wall
Clamp Flange - Split bushing clamps over
bulb extension or connecting tubing.
Threaded Flange - Supports bushing or well.
FA0209.ai
To Bend Tubing
Type of Tubing Minimum Bending Size
Plastic Coated
FlexibleTube
7.6 cm radius
Bulb Extension 3.0 cm radius
A2.2 Calibrationand
Replacement of Thermal
Elements
Two test baths at widely separated temperature in
the measurement range are required for thermal
element calibration. When ordering replacement
thermal element, specify the desired temperature
range. Yokogawa will supply a precalibrated
element. If you wish to check or calibrate an
element yourself, use the following procedure.
(1) CalibrationEquipment
To controller
Mechanical stirrer
Labolatory-grade
thermometer
FA0210.ai
1. Prepare two test baths at temperatures that are
widely separated on instrument scale.
2. Do not calibrate element in air or against
another element in process.
3. Remove element from process and place it
near a laboratory-grade thermometer in a well-
stired bath.
4. Allow sufcient time for element to reach liquid
temperature.

YOKOGAWA MC43 Specifications

General

Brand	YOKOGAWA
Model	MC43
Category	Controller
Language	English