Category: Product Bulletins

RIGAS has expertise with this multi-loop controller.  It has been used in various applications; the one it was designed for is boiler control.  The application that we used it on (and serviced it on) was CEMS (continuous emissions monitoring).

On the CEMS application, the controller handled analog rescaling (for daily automatic re-calibration offsets), solenoid valve control, and some limited threshold/alarm logic.

RIGAS rewrote Rosemount’s original program to be friendlier when it came to entering cal gas values.  It is called the “Plus 10″ program; essentially, the original program was moved up 10 rungs on the ladder and 10 lines of code were inserted just to handle calibration gas constants (and ‘yes,’ we had to put GoTo links in place of the old constants cells).

We have some parts (very limited though) and know where a few old GPC1500s are. We would buy them from our customer, refurbish the units, and resell them to you with a warranty.

If you’re looking for a quick fix – try replacing the battery.  That could cure a whole host of problems.

This particular analyzer is one of RIGAS’ favorites to work on (i.e., repair).

Here is a list of some of our checks that we perform before we release your analyzer for shipment:

1. Noise on range X1 should be minimal (±1 count)
2. All ranges should be correlated (especially those with an optional range trim board)
3. Response to certified calibration gas should be equal to or better than factory specifications
4. When TP5 = 5 VDC then [a] the display reads 100.00, [2] analog output is either 100mV or 1V or 5V (depending on jumper configuration, [3] isolated current output = 20 mADC
5. Analyzer is clean
6. Insulation is re-glued
7. Frayed wires are fixed
8. Plexiglas is grounded
9. A/C power switch leads are coated with “liquid electrical tape” to prevent inadvertant electrical shock to the end user
10. Ribbon cables are pristine
11. Rear terminal strip has a sticker that shows what functions are on what terminals
12. Zero pot (potentiometer) is greater than 50% (the higher the number here, the less contamination in the analyzer tubing)
13. It needs to look good again (paint job if necessary)
14. Flame safety circuits MUST work properly
15. Backpressure regulator works as designed (and controls at a very reliable value)
16. There’s a bunch more, but we don’t want to bore you with the entire list!

 

Give us a try by calling us at 877-616-0600.

Part Number	Description	Available?
632785CSS	755: Door board	Y
638254	755: Alarm relay assy
638254RU	755: Alarm relay assy
L22-BA-2.0	755: Barry Mount vibration	Y
S22-AA-2.2	755: Barry mount vibration	Y
622356RU	755: Board Assy, Photocell
622356	755: Board Assy, Photocell	Y
622351	755: Board, Connector	Y
631773	755: BOARD, POWER SUPPLY	Y
631773RU	755: BOARD, POWER SUPPLY	Y
6A00236G01	755: Cable, detector upgrade
622443CSS	755: det/mag assy	Y
622443	755: det/mag assy
656189RU	755: detector	Y
632359	755: detector strip heater	Y
6A00233G01	755: detector upgrade kit
861273	755: FAN (120V) case htr {*}	Y
861649	755: Fuse, Thermal, 76°C{*}	Y
656143	755: Kit, Detector Assy
50A0010R0	755: Kit, Source Lamp	Y
616418	755: Kit, Source Lamp{*}	Y
622422	755: MAGNET
876316	755: master board term 4 p {*}	Y
193311	755: METER WITH BLANK SCALE
632358RU	755: paramagnetic detector
632358CSS	755: Paramagnetic detector RU	Y
50A0001R0	755: plug tabs
616239	755: Source Lamp, bulb only(*)
861651	755: thermistor, 100K {*}	Y
861651RU	755: thermistor, 100K RU	Y
656189	755:DETECTOR OPTICAL BENCH KIT
7289A32	755A: Allen Wrench, 0.9mm Hex	Y
95966A414	755A: Panel screw
50D0002R4	755A: Pressure comp interface
899495	755A: AD625, pressure comp {*}	Y
7122A12	755A: Allen Wrench 0.035 inch	Y
861467	755A: anti-vibration mounts{*}
661121	755A: baro interface bd{*}
661207	755A: barometric comp bracket
50D0003R1	755A: bracket, baro module
50B0001R0	755A: CABLE ASSY
632380	755A: CABLE ASSY {*}
50D0005R0	755A: det heater interface bd
622637RU	755A: detector kit
LCD5663R-27K	755A: LCD display, 6 seg
888302	755A: LCD display, 6 seg {*}
898365	755A: LCD driver chip {*}
50D0004R0	755A: M&C detector bracket
50D0002R0	755A: pressure comp interface
50D0002R3	755A: pressure comp interface
901068	755A: ribbon wire 4C {L}	Y
882297	755A: U1 isolation driver {*}
901792	755R/951C: Backlight for LCD	Y
652830	755R: Board Assy, Control
654022	755R: Display Assy (951C too)	Y
654080	755R: Fan Assy, Case Heater{*}	Y
901791	755R: LCD display, 6 seg	Y

Part Number	Description
25B0001R0	400: Power supply cover
25B0002R0	400: Temperature Controller
400A-2008-0001	400A, 120 VAC on alarm bus
898816	400A: range relay {*}
623983	400A: Range Select Board
9385K61	400A: Foam Insulation
25C0008R0	400A: Display driver
400A ANALYZER	400A: Rosemount Analyzer
25A0001R0	400: Glow plug / igniter
25C0001R0	400A light up procedure
25C0007R0	400A: 4-20 mADC board
400A-ALARM	400A: alarm module
25C0005R0	400A: cable 16 conductor
25C0009R0	400A: Door, Inside plexiglass
25C0004R0	400A: high range capillary
25C0003R0	400A: mixed fuel capillary
25C0002R0	400A: pure fuel capillary
620443RU	400A: RANGE SWITCH BD
400A-REPAIR	400A: repair of analyzer
620423-REPAIR	400A: Repair of Preamp Board
73659	400: Burner Tip Assembly
630375	400: Cap assy w/glow plug
73658	400: collector assy
73674	400: Electrode kit
617900	400: Glow plug / igniter (*)
834341	400: Lamp, Pilot {*}
643459	400: SS GAUGE, 5psig
6A00324G01	400A: Main Elect Bd Updated
656888	400A: Air restrictor blue dot
620428	400A: BOARD, AMPLIFIER *
621031	400A: CABLE, 16 COND
655178	400A: Door,Inside plexiglas{*}
620446	400A: Flame Out Bd (Obsolete)
656921	400A: high range capillary {*}
860918	400A: igniter toggle switch{*}
630669	400A: Mixed fuel restrict red
620423	400A: Preamp Board
620443	400A: RANGE SWITCH BD
898904	400A: reed relay {*}
904731	400A: reed relay 5V, 1A {*}
898861	400A: relay, 24v {*}
876447	400A: SPAN POT, 30K {*}
655171

 

Part Number	Description
** BOARDS
1L03628G01	CPU BOARD ASSY
1L03394H01	REPLACED BY 1N04967G01
1N04967G01	RELAY OUTPUT & TERM. PANEL KIT
3D39097G01	ANALOG OUTPUT CARD, CRE
1N04956G02	GENERAL USER INTERFACE
1N04957G02	ADP CRU
3D39263G01	DETECTOR AMPLIFIER ASSY
3D39028G01	INTERCONNECT BOARD ASSY
1A97965H01	POWER SUPPLY, LAMP
9679D01G01	rs232/rs-232/422 PCB ASSY CONVERTER
3D39055G01	CRE/OPM DRIVER BOARD ASSY
4843B05G01	IO PLEXER ASSY
4843B05H02	INPUT MODULE, #IV5, 0-5V
4843B05H03	REPLACED BY 1A98478H01
1A98478H01	INPUT MODULE DUTEC #IAC5
4843B05H04	REPLACED BY 1A98479H01
1A98479H01	OUTPUT MODULE DUTEC #0AC5
** ELECTRICAL
4841B76H02	LAMP (replaced by 40B0011R0)
40B0011R0	LAMP, #L8008, frosted
1A97962H01	THERMOSTAT,
1A97964H01	REPL BY 1A97964H03
1A97964H03	HEATER, 120 VOLT, 300 WAT
4511C83H02	REPL BY 4511C83H01
4511C83H01	BLOWER MOTOR
3532B25H01	SWITCH, DIFF. PRESS.
** FILTERS
4841B92H01	REPL BY 4843B09H01
4843B09H01	FOAMEX FILTER, SIF 45 PPI
4841B92G01	(bad part number in manual)
4841B92H02	REPL BY 4843B09H02
4843B09H02	FOAMEX FILTER, SIF 60 PPI
4841B94H01	REPL BY 4843B11H01
4843B11H01	FILTER RETAINER
9884A16H02	REPLACED BY 9884A16H05
9884A16H05	FILTER, POLYURETHANE
9884A16H04	FILTER CARTRIDGE ASSY BLWMOTOR
1A99231G01	FILTER KIT
1A98248G01	SPARE PARTS KIT
** LCWs
4842B37G01	REPLACED BY, CONSULT RIGAS
4843B15G01	REPLACED BY, CONSULT RIGAS
1A98904G01	GLASS LCW RETROFIT KIT 3-10 FT
4848B50G02	LCW 1, REPLACED BY 40F0050R02
40F0050R02	LCW 1, Single element
4848B50G01	LCW 2, REPLACED BY 40F0050R01
40F0050R01	LCW 2, Multi-segment
1A99433G01	Temperature control retrofit kit
** MECHANICAL
3532B51H01	CHECK VALVE

Description: This is an isolated signal analog output card used industry wide. The analyzer’s potentiometric output (DC volts) signal drives the signal for the 4-20 mADC card (usually 0VDC input = 4 mADC output & 5 VDC input = 20 mADC output). The term “isolated” refers to the fact that the output signal is not referenced to earth ground and is therefore much less susceptible to interference from other voltage sources. Milliamp signals are very useful when running long signal loops (on the order of tens of feet to thousands of feet long; note that total loop resistance has to be less than 850 ohms).

Where used: 400A,755,755A,755R,870

Static sensitive: This board is not very susceptible to ESD but handle it with some ESD protocols.

Replaces: Rosemount 620433 (in kit p/n: 621023)

Compatibility: RIGAS has released its compatible version of the OEM board. Some nice enhancements were included: [1] hook-type test points, [2] better labeling, [3] heat sinks, [4] zero & span potentiometers can dual configuration (i.e., adjustable from the top or from the front).

Please specify potentiometer type when ordering. Choices: [1] end adjust or [2] top adjust

Typical failure modes (after many years of service): [1] total failure: most likely due to the fullwave bridge rectifier or output opamp. [2] non-linearity: most likely due to the charge pump circuit. [3] inability to calibrate: most likely due to the charge pump circuit. [4] noisy output: output opamp is failing –or– input signal is noisy –or– board mounted isolated power supply(ies) are failing –or– loop resistance is very high –or– it could be that your mADC reader (DCS, DAS, etc) is misbehaving.

Repairable: Yes!  Call us at 877-616-0600 for an RMA number.