Bacharach 450 - Calibrate T-Stack (Stack Temperature) Channel

Calibration ECA 450
52 Instruction 0024-9400
2. With the Calibrate Pressure screen displayed, and with the hose from the
calibration fixture connected to the analyzer’s PRESSURE port, adjust
the bellows for a micro manometer reading of −4 in. H
2
O column
(−10 mb).
3. Wait until the Measured reading on the screen stabilizes. Then use the
∧∨ and < > keys to enter an Applied value that equals the micro
manometer reading.
The calibration range is from –6 to –2 in. H
2
O column (−15 to −5 mb). An
applied value that is outside this range will cause the message “Bad
Calibration Entry” to appear.
Typical Calibrate Pressure Screen During Calibration:
«CALIBRATE PRESSURE«
Measured -3.40 inwc
Applied -4.00 inwc
4. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.
5. Remove calibration equipment.
3.5 Calibrate T-Stack (Stack Temperature) Channel
The following procedure first zeros and then spans the stack-temperature
channel to known temperature values.
Material Required:
• Thermocouple Simulator (K-type) Range: 0 to 600 °F
Accuracy: ±0.5 °F
TS-Zero Procedure:
1. Adjust simulator to 32 °F (0 °C).
The calibration range is from 32 to 41 °F (0 to 5 °C). Any attempt to
calibrate outside this range will cause the message “Bad Calibration
Entry” to appear.
2. Plug simulator’s K-type connector into analyzer’s T-STACK jack (see
Figure 1-1).
3. Enter Calibration List screen; then choose T-Stack per Section 3.3 to
display the CALIBRATE TS-ZERO screen.