Dwyer Instruments GFM2 Series Installation And Operating Instructions Manual Download Page 15

APPENDIX I

Dwyer

®

GFM2 EEPROM Variables Rev. A0

Gas Independent Variables

Indication

BlankEEPROM
SerialNumber
ModelNumber
SoftwareVer
TimeSinceCalHr
Options1
BackLight
AddressRS485
GasNumber
FlowUnits
AlarmMode
LowAlarmPFS
HiAlarmPFS
AlmDelay
RelaySetting
TotalMode
Total
TotalFlowStart
TotalVolStop
KfactorMode
KfactorIndex
UserDefKfactor
UDUnitKfactor
UDUnitTimeBase
UDUnitDensity
AoutScaleV
DRC_DP
AoutScale_mA
AoutOffset_mA
SensorZero
Klag [0]
Klag [1]
Klag [2]
Klag [3]
Klag [4]
Klag [5]
Kgain [0]
Kgain [1]
Kgain [2]
Kgain [3]
Kgain [4]
Kgain [5]
Zero_T
Tcor_K
AlarmLatch
TotalWarmDisable
Reserved1
LCD_Diagnostic
Reserved2
N2_RollBack

Reserved3

No.

0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Data Type

char[10]
char[20]
char[20]
char[10]
float
uint
int
char [4]
int
int
char
float
float
uint
char [4]
char
float
float
float
char
int
float
float
int
char
float
float
float
float
uint
float
float
float
float
float
float
float
float
float
float 
float 
float
float
float
uint
char
uint
char
uint
char
uint

Notes

Do not modify. Table Revision. [PROTECTED]
Serial Number [PROTECTED]
Model Number [PROTECTED]
Firmware Version [PROTECTED]
Time since last calibration in hours
Misc. Options
Back Light Level [0-4095]
Two character adress for RS485 only
Current Gas Table Number [0 - 9]
Current Units of Measure [0 - 22]
Alarm Mode [‘E’ - Enabled, ‘D’ - Disabled]
Low Flow Alarm Setting [%FS] 0 - Disabled
High Flow Alarm Setting [%FS] 0 - Disabled
Flow Alarm Action Delay [0 - 3600 sec] 0 - Disabled
Relays Assignment Setting (N, T, H, L, R, M)
Totalizer Mode [‘E’ - Enabled, ‘D’ - Disabled]
Totalizer Volume in %*s (updated every 6 min)
Start Totalizer at Flow [%FS] 0 - Disabled
Totalizer Action Limit Volume [%*s] 0 - Disabled
D-Disabled, I-Internal, U-User Defined
Internal K-Factor Index [0 - 35]
User Defined K-Factor
K-Factor for User Defined Units of Measure
User Defined Unit Time Base [1, 60, 3600 sec]
User Defined Unit Density Flag [Y, N]
DAC 0 to 5 VDC Analog Output Scale
H/W DRC DP settings [0-255]
DAC 4 to 20 mA Analog Output Scale
DAC 4-20mA Analog Output Offset
DPW value for Sensor Zero [0-1023]
DRC Lag Constant [Do Not Alter]
DRC Lag Constant [Do Not Alter]
DRC Lag Constant [Do Not Alter]
DRC Lag Constant [Do Not Alter]
DRC Lag Constant [Do Not Alter]
DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Gain for DRC Lag Constant [Do Not Alter]
Resistance when last AutoZero was done [0-4095 count]
Resistance correction coefficient [PFS/count]
Alarm Latch [0-3]
Sensor Warm Up period Totalizer [D/E]
Reserved
LCD Diagnostic Mode: [E/D]
Flow Reading Averaging: [0,1,2] (100, 250, 1000 ms), Default -1
Back to N2 conversion mode: [E, D]
Reserved for Troubleshooting (do not change)

Page 14

Summary of Contents for GFM2 Series

Page 1: ...thin 2 of actual flow Output Signal Linear 0 to 5 VDC 3000 min load impedance and 4 to 20 mA 500 max loop resistance Relay Rating 1 A 24 VDC Max Particulate Size 5 microns Temperature Limits 32 to 122...

Page 2: ...ass Flow Meter Installation and Operating Instructions Bulletin F GFM2 DWYER INSTRUMENTS INC Phone 219 879 8000 www dwyer inst com P O BOX 373 MICHIGAN CITY INDIANA 46360 U S A Fax 219 872 9057 e mail...

Page 3: ...7 6 2 Flow Path Cleaning 7 6 2 1 Restrictor Flow Element RFE 7 6 2 2 GFM2 Models 7 7 Calibration Procedures 8 7 1 Flow Calibration 8 7 2 Gas Flow Calibration of GFM2 Mass Flow Meters 8 7 2 1 Connecti...

Page 4: ...thorough leak test of the entire system All GFM2 s are checked prior to shipment for leakage within stated limits See specifications in this manual 2 2 Electrical Connections GFM2 is supplied with a 2...

Page 5: ...nterface or optional Profibus DP interface GFM2 flow meters support various functions including programmable flow totalizer low high or range flow alarm automatic zero adjustment activated via local b...

Page 6: ...peration of the meter above 110 of maximum calibrated flow may increase recovery time 5 3 GFM2 Parameters Settings 5 3 1 Engineering Units Settings The GFM2 Mass Flow Meter is capable of displaying fl...

Page 7: ...nitrogen for up to 36 gases are stored in the GFM2 see APPENDIX II In addition provision is made for a user defined conversion factor Conversion factors may be applied to any of the ten gas calibrati...

Page 8: ...to disassemble the sensor If blockage of the sensor tube is not alleviated by flushing through with cleaning fluids please return meter for servicing 6 2 1 Restrictor Flow Element RFE The Restrictor...

Page 9: ...s the sensor Average reading must be in the range 120 10 counts If it is not perform Auto Zero procedure see section 5 3 10 Zero Calibration 7 2 3 Gas Linearization Table Adjustment Gas flow calibrati...

Page 10: ...RS 232 SOFTWARE INTERFACE COMMANDS 8 1 General The standard GFM2 comes with an RS 485 interface For the optional RS 232 interface the start character and two hexadecimal characters for the address mu...

Page 11: ...command can be used only when absolutely no flow thru the meter and no earlier then 6 minutes after power up It can take several minutes to complete Unit will not respond to other commands when this...

Page 12: ...R read current totalizer volume W warm up delay S setting status D disable sets K 1 I internal K factor U user specified factor S status FS mL sec mL min mL hr L sec L min L hr m3 sec m3 min m3 hr f3...

Page 13: ...w measurement LCD display reading does correspond to the correct flow range but 0 5 Vdc output signal does not change always the same reading or around zero LCD display reading and 0 to 5 Vdc output v...

Page 14: ...nsor temperature is too high MCU temperature is too high overload Fatal Error EEPROM or Auto Zero error Solution Flush clean or disassemble to remove impediments or replace the filter screen see secti...

Page 15: ...rent Gas Table Number 0 9 Current Units of Measure 0 22 Alarm Mode E Enabled D Disabled Low Flow Alarm Setting FS 0 Disabled High Flow Alarm Setting FS 0 Disabled Flow Alarm Action Delay 0 3600 sec 0...

Page 16: ...Flow in PFS 0 6 70 0 FS A D Value from Sensor counts Actual Flow in PFS 0 7 80 0 FS A D Value from Sensor counts Actual Flow in PFS 0 8 90 0 FS A D Value from Sensor counts Actual Flow in PFS 0 9 100...

Page 17: ...n 114 C2Cl2F4 Freon 115 C2ClF5 Freon C318 C4F8 Germane GeH4 Germanium Tetrachloride GeCl4 Helium He 50 L min Helium He 1 50 L min Helium He 2 10 50 L min Index 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...

Page 18: ...butyl Aluminum C4H9 AL Titanium Tetrachloride TiCl4 Trichloro Ethylene C2HCl3 Trimethylamine CH3 3N Tungsten Hexafluoride WF6 Uranium Hexafluoride UF6 Vinyl Bromide CH2CHBr Vinyl Chloride CH2CHCl Xeno...

Page 19: ...APPENDIX IV Component Diagram Top Component Side Bottom Component Side Page 18...

Page 20: ...s required The Series GFM3 is not field serviceable and should be returned if repair is needed Field repair should not be attempted and may void warranty See 1 3 WARRANTY RETURN Refer to Terms and Con...

Page 21: ...wyer Instruments Inc Printed in U S A 5 13 FR RA 444052 00 DWYER INSTRUMENTS INC Phone 219 879 8000 www dwyer inst com P O BOX 373 MICHIGAN CITY INDIANA 46360 U S A Fax 219 872 9057 e mail info dwyer...

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