HygroGuard

HygroGuard 2650 Trace Moisture Analyzer

The HygroGuard 2550 is a microprocessor-controlled trace moisture analyzer and a remote probe which houses a gold/aluminum oxide capacitive sensor and a Zener diod temperature sensor. The HygroGuard 2550 was designed to provide economical trace moisture analysis for gases. Output range, alarm set points, measurement units (dew point or ppmv) and temperature calibration data are all user-programmable.

The instrument measure dew point temperatures from -80°C to +20°C (-112°F to +68°F), with special calibration available to -100°C (-148°F), with ± 2°C (± 3.6°F) accuracy. Process control is obtained with one alarm relay and one, isolated, linear 4-20 mA output corresponding to dew point or ppmv. A second alarm is also assignable to the m oisture unit. Three push-butons allow the user to easily set the alarm set points, measurement unit, analog output range, temperature calibration data, and pressure constant. The instrument electronics are EMI/RFI/ESD resistant, exceeding IEC and ANSI/IEEE standards.

Features:

	Cost-effective, flexible trace moisture analyzer with dew point and optiona l ppmv display
	Dew point measurement range of -100°C to +20°C. with ±1°C accuracy
	Interference-free PFM signal transmission • Compact, 7 pitch (35 mm) module
	Standardized, programmable probe output signal; with three alarms
	ACKBUS compatible

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HygroGuard 2650 Trace Moisture Analyzer

SPECIFICATIONS:

Probe

Sensor: Planar gold/aluminum capacitance

Calibration Range: -80°C to +20°C (-112°F to +68°F)
special calibration to -100°C (-148°F)

Recommended Recalibration Cycle: 6-12 months depending on the application

Accuracy: ± 2°C ( ± 3.6°F) in the standard calibration range

Repeatability: Better than 1°C ( ± 1.8°F)

Max. Relative Humidity: 50% @ dew points > 0°C (32°F)

Temperature Sensor: Zener device, range -70°C to +70°C (-94°F to +158°F)

Signal Transmission: Frequency, generated by probe electronics

Operating Pressure: 0 to 3000 psig (0 to 200 bar)

Recommended Flow Rate: 1 to 5 SCFH (in a bypass mode)

Gas Flow Velocity: Static up to 165 ft/sec @ 14.7 psi, 16.5 ft/sec @ 150 psig,
1.65 ft/sec at 1500 psig with no particles in the stream; higher with sintered end cap

Probe Tube: 1/2” diameter, 316 stainless steel

Mounting Adapter: 1/2” tube x 1/2” MNPT, 316 SS compression fitting standard

Cable Connection: Rugged multi-pin connector; screw terminal in explosion-
proof junction box with 1/2” FNPT conduit connection

Probe Cable: 4-conductor, AWG 22, stranded, shielded to maintain EMI/RFI/ESD resistance, up 1000 ft., 5 ft. standard

Weight: .45 kg. (1 lb.)

2550 Analyzer Specifications

Electronics: Self-checking, microprocessor-controlled, update measured
value every 2 sec.

EMI/RFI/ESD Protection: Exceeds IEC 801.2, ANSI C63, IEC 801.4, ANSI/IEEE
C62.41, and 801.5, ANSI/IEEE C62.41 standards

Accuracy: ± 0.2%

Moisture Units: Dew point in °C or °F and ppmv, user programmable

Instrument Range: -130°C to +20°C (-202°F to +68°F) dew point temperature, 0.001 to 9999 ppmv

Temperature Units: °C or °F, range -20°C to +80°C (-4°F to +176°F)

Outputs: Isolated output of 0/4-20 mA into 500 ohms max.,
programmable range corresponding to user-selected moisture unit; two alarm relays, fail-safe mode, SPDT, dry contacts rated at 250 V AC, 2.5 A, P AC = 300 VA, cos >0.7 P DC = 100 W, 100 V DC; alarm set points, output range, pressure constant

Cable Connection: Screw terminal (NEMA 4X includes 4 cable glands)

Program: Nonvolatile memory

Data: EEPROM

User Interface: Three push-buttons to select moisture or temp. reading,
moisture or temp. units (dew point, ppmv, °C, °F), alarm set points, two temp. calibration points, output range, pressure constant

Display: 1/2” four-character LCD

Operating & Storage Temperature: -10°C to +50°C (14°F to 122°F)

Power: 85 to 130 V AC, 187 to 276 V AC, jumper selectable; 7 VA; 50/60 Hz; 24 V DC optional

Weight: 1.8 kg (4 lbs.)

Ordering Information Analyzer 2550
1 2 3 4

1 Certification
O Standard configuration (no approvals)
CG CSA General Purpose Approved

2 Analyzer Without Probe
1 No enclosure
4 Panel mount
5 NEMA 4X/CSA Type 3 with 4 cable glands (Fig. 3)
7 NEMA 3/4/7/9, Class I, Div. 1 & 2, Groups B, C, & D
8 Panel mount with door (Fig. 4)

3 Alarm
D 2 Alarm relays, 250 V AC, 2.5 A, both assigned to moisture
(programmable set points)

4 Power
0 115 V AC, 50/60 Hz
1 220 V AC, 50/60 Hz
2 24 V DC

Ordering Information Moisture Probe DY – 5
1 2 25 3 5

1 Mounting Adapter
0 None
2 1/2” MNPT X 1/2” tube, 316 SS compression fitting
3 1/2” MNPT X 1/2” tube 316 SS compression fitting
4 1/2” X 16 “O” ring X 1/2” tube 316 SS compression fitting
6 SS – 8 - VCR( - 3 gland with female nut SS – 8 - VCR( - 1 welded to the probe tube, includes gasket/retainer assay

2 Probe Structure
1 Replacement moisture probe for explosion-proof probes: 1/2” diameter
5” long 316 SS probe with 1/2” MNPT welded on for junction box
mounting
2 Moisture probe mounted to an explosion-proof junction box for hazardous areas Class I, Div. 1 & 2, Group C & D, overall length 10” (Specify on order if for Group B)
7 Probe with 8-pin cable connector, overall length 7.8”

3 Protective Sensor Cap
D Standard end cap
S Sintered stainless, 100(m (use with high flow, particulates and dryers)

5 Certification
0 None
C1 Designed for Class I, Div. 1, Gr. B, C, D when used with intrinsic safety barriers
C2 Designed for use in Class I, Div. 2, Gr. B, C & D areas
CX Explosion-proof with flame arrestor-equipped flow cell for Class I, Div. 1, Gr. C & D

Ordering Information Interconnecting Cable
1 /2550 2

1 7 Multi-pin connector and tinned ends (use with probe DY-5_7 25)
2 Spade lugs and tinned ends (use with probe DY-5_2 25)

2 Cable Length
O 5 ft. long
L Other length (specify required length up to 1000 ft.)