SMC sierra monitor corporation

Sentry Instruction Manual - Version 6

5.3.2 CALIBRATION GAS DELIVERY METHODS

Calibration gas is can be delivered to the sensors via the following delivery devices:

Model 5358-00: Calibration Adapter - used with portable calibrators. - See Figure 5-1

Model 5360-00: Calibration Gas Delivery fitting - permanently installed fitting which allows tubing to be run to a convenient delivery location

5.3.3 SENSOR EXPOSURE TO GAS

Calibration gas must be delivered to the sensor using the flow rate and duration listed in Table 5-1

Model

Gas

Flow

Period

 

 

 

 

5100-01

H2S

300 cc/min

3 minutes

5100-02

Combustible

100 cc/min

3 minutes

5100-03

O2

200 cc/min

3 minutes

5100-04

CO

150 cc/min

3 minutes

5100-05

H2S

300 cc/min

3 minutes

5100-06

CL2

300 cc/min

3 minutes

5100-07

H2

300 cc/min

3 minutes

5100-10

SO2

300 cc/min

3 minutes

5100-12

NO2

300 cc/min

3 minutes

5100-13

CO

300 cc/min

3 minutes

5100-16

CO

300 cc/min

3 minutes

5100-19

NO

300 cc/min

3 minutes

5100-21

HCL

1,000 cc/min

10 minutes

5100-22

HCN

300 cc/min

3 minutes

5100-25

NH3

300 cc/min

3 minutes

5100-26

HF

300 cc/min

3 minutes

5100-27

ETO

1,000 cc/min

3 minutes

Table 5-1

Calibration Gas Flow Rates

5.3.3.1 HYDROGEN SULFIDE

Hydrogen Sulfide gas must be supplied from a permeation tube device or from Sierra Monitor Model 9200 series calibrator.

5.3.3.2 COMBUSTIBLE

For compliance with factory Mutual (FMRC) Approval, the Sierra Monitor Model 1200-26 is the only Approved calibration gas delivery device. Apply 50% LEL methane in air or the calibration concentration of the gas to be monitored at 100 cc/min using Model 5358-00 or 5358-01 Calibration Adapter and Model 5360-00 Gas Delivery Fitting. For calibration with a standard gas and cross reference to a secondary gas, see Appendix D.

NOTE

Cross reference factors are not FMRC approved.

Figure 5-1

Model 5358-00 Calibration Adapter

5.3.3.3 OXYGEN

The calibration procedure is different for Oxygen because zero gas is not required and the sensor will be exposed only to span gas. This is a single point calibration.

Either: Deliver calibration gas (clean air - 20.9% Oxygen through the magnetic head at 100 cc/min for one minute and then remove the air and the calibration head.

Or: If the local air is known to be clean leave the magnetic head in place for one minute and then remove.

5.3.3.4TOXIC GAS

Toxic Gas for may be delivered from Sierra Monitor Model 9200 series calibrator or from appropriate permeation devices.

CALIBRATION

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Sentry Industries 5000 Model Gas Flow Period, Calibration Gas Flow Rates, Model 5358-00 Calibration Adapter

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