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HygroTwin 2850 - Specifications
Trace Moisture, Relative Humidity, Pressure and
Oxygen Analyzer
Electronics |
Continuous,
self-checking, microprocessor controlled, updating
measured value every 2 seconds |
Accuracy |
+/-
0.2% |
Instrument
Range |
-130°C
to +100°C (-202°F to +212°F) dew point,
1 ppbv to 10-6 ppbv, 0 to 45,000 lbs/MMSCF, 7x10-8
to 760 mmH g, 0 to 100% |
Inputs |
2
each moisture, 2 each temperature, both accepting
the probe frequency signals of 0 to 10,000 Hz typical,
2 each optional inputs, accepting 0 to 10,000 Hz,
1 to 5 VDC, or 4 to 20 mA |
Outputs |
4
each isolated, linear analog 4 to 20 mA into 500
ohms load, 0/1 to 5 V, load >10 kohms, user-assigned
channel, unit, and span; 4 each alarm relays, SPDT,
rating 250 V AC, 2.5 A, user-assigned channel, unit,
and set point; 1 each RS-232-C port, baud rate 110,
300, 1200, 2400, 4800, 9600, data bits 7 or 8, parity
odd, even or none; 2 each power supply for optional
sensor 12/24 V DC, 50 mA |
Cable
Connections |
NASA-approved
push-in terminals |
Program |
Non-volatile
memory |
Data |
EEPROM |
EMI/RFI/ESD
Resistance |
Exceeds
IEC 801.2, ANSI C63, IEC 801.4, ANSI/IEEE C62.41;
and IEC 801.5, ANSI/IEEE C62.41 standards |
Moisture
Units |
Dew
Point (°C or °F); Relative Humidity (%);
Concentration (ppmv, ppbv, vol %, mol %, lb/MMSCF;
Concentration (liquid) (ppmw) – ppmw; Concentration
(gas) – ppmw; Mixing Ratio (g/kg, lb/lb, gr/lb);
Absolute Humidity (gr/ft3, g/m3); Vapor Pressure
(mmHg, mbar)); Difference Process Temp, and Dew
Point (change in °C, change in °F); Difference
A&B in Mixing Ratio (g/kg, gr/lb); Difference
A&B in Absolute Humidity (g/m3, gr/cf); Temperature
Units (°C, °F) |
Eng.
Units |
Independently
assignable to display, outputs, and alarms |
Optional
Input Units |
Pressure
with correction (P in psig, inches of water column,
bar or Torr); Oxygen (OX in ppmv or % by volume) |
Instrument
Set-up |
By
3 push-buttons and 4 programming levels: Units,
constants, and calibration data; outputs, alarms,
and hardware set-up; RS-232C, time and date, and
listing of calibration tables: special functions. |
Display |
2
line, 80 character back lit LCD displays moisture,
temperature, and additional inputs simultaneously |
Operating
& Storage Temp. |
0°
to 50°C (32°F to 122°F) |
Power |
115
V AC, 50/60 Hz, 25 Watts(; 200 V AC, 12 V DC, 48
V DC,
24 V DC, optional; +15/-10 10% for 115 V AC |
Battery
Power |
For
Model 2850-6 12 V DC, 5 to 6 hour operation, built-in
recharger (optional) |
Weight |
19”
Rack Mount: 3.15 kg (7 lbs) Model 2850-3 Panel Mount:
2.7 kg (6 lbs) Model 2850-4 NEMA 4X: 5.85 kg (13
lbs) Model 2850-5 Portable/Bench Top: 5.4 kg (12
lbs), 14 lbs with battery Model 2850-6 NEMA 3/4/7/9:
44.1 kg (98 lbs) Model 2850-7 |
Enclosures |
Height
Width Depth |
19”
Rack Mount |
5.25”
19” 11” |
Panel
Mount |
5.25”
10” 11” |
Panel
Cutout |
4.75”
8.625” |
NEMA
4X |
13.3”
11.3” 5.6” |
Portable/Bench
Top |
5.75”
11.5” 13.5” NEMA 3/4/7/9, Cl.1, Div.1&2,
Gr. B, C, D 18” 18” 7” |
Weight |
1.8
kg (4 lbs.) |
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