Cal Flame CR4000 Instructions d'exploitation télécharger pdf (Page 14)

Page 3

Installation — Select Field Settings

Page 10

Factory Settings: The GasPoint is calibrated and tested before shipping. Prior to shipping they are factory set to

the commonly used values. To change the factory default settings see the applicable section:

The following settings are field selectable:

Dip Switch Overview

1. Calibration Time Delay: To set span, select a time delay of 30 seconds or 6 minutes. For remote calibration use

the 6 minute setting to allow time for the gas to reach the sensor. To save time and calibration gas,

GasPoint will begin the Span procedure when it senses the calibration gas.

Note: The factory default is 0.5 minutes (30 seconds). See Dipswitch 3 (CAL TIME) to change to 6 minutes.

2. Measuring Range: Select from up to four measuring ranges by setting Block 1 switch 4 and switch 5 to open or

closed. Both switch 4 and 5 are factory set to "open". See table below for selections

3. LOW and/or HIGH Relays: Select Non-latching or Latching. Factory default is set to open (non-latching).

4. LOW and/or HIGH Relays: Select De-energized or Energized. Factory default is set to open (de-energized).

Changing the Alarm and Calibration Gas Setpoints

5. Gas Alarms: Gas alarm levels are set to OSHA (Occupational Health and Safety of America) standards prior to

shipping. GasPoint is equipped with two alarm levels LOW and HIGH. To set, select (two, one or

none) alarm levels and set selected levels to any values desired. To change them see Setting Alarm

Setpoints. Factory defaults are listed below

6. Calibration Gas Concentration Level: To facilitate Auto Span, the calibration gas concentration expected is

preset. It can be changed at any time for the toxic and combustible gas Sensors. Set the standard

generally used in your facility. See Automatic Calibration Routine to change the value.

The Oxygen Sensor span is set to 20.9% and cannot be adjusted (For O2 calibrate in normal 20.%

ambient air or if the atmosphere may be deficient or enriched use Pure Air calibration gas.

Note 1: Calibration Gas Factory Default Values — It is recommended that the default values be changed if

selecting higher measuring ranges than the factory default measuring range. See page 13 and page

26 (Note 2).

Table 3: Factory Default Settings; Select Measuring Ranges

Gas Sensed

Units of

Measure

Select Measuring Range:

Alarm Setpoints

Calibration Gas

Factory

Default

O—O

Or Select

4. Closed

5. Open

Or Select

4. Open

5. Closed

Or Select

4. Closed

5. Closed

Factory Defaults

(Field Settable)

Factory Default

Value Level

Expected

Note1:

2 3 4

LOW HIGH

Combustibles 0-100% LEL % LEL

0 to 100

N/A N/A N/A

10% 20%

50% LEL

Hydrogen Sulfide ppm

0 to 100

0 to 50 0 to 500 0 to 20

10 ppm 15 ppm

20 ppm

Carbon Monoxide ppm

0 to 500

0 to 1000 0 to 100 0 to 50

35 ppm 200 ppm

200 ppm

Nitrogen Dioxide ppm

0 to 50.0

0 to 10.0 0 to 20 0 to 99.9

2.0 ppm 5.0 ppm

10.0 ppm

Hydrogen Cyanide ppm

0 to 20.0

0 to 50.0 0 to 100 N/A

4.7 ppm 10 ppm

15 ppm

Sulfur Dioxide ppm

0 to 100

0 to 50 0 to 20 0 to 10

2 ppm 5 ppm

20 ppm

Oxygen % by vol.

0 to 30.0%

N/A N/A N/A

19.5% 18.5%

20.9% Ambient

air or pure air

Ammonia ppm

0 to 50

0 to 100 0 to 500 0 to 999

25 ppm 50 ppm

50 ppm

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 35 36

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Cal Flame CR4000 Instructions d'exploitation Page 14

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