Teledyne 8800T, Инструкция по эксплуатации, Страница: 8 / 49

8800T User’s Manual
page 4
tive.
• Do not disassemble the porous metal filter encapsula-
tion, as this will damage the sensor and void your fac-
tory warranty.
• Prior to installation of the probe, ensure that no contam-
inants are present in the system (e.g. oil, liquid water).
2.2 Sensor Technical Specifications
Type: .................................Hyper Thin Film high capacitance Al
2
O
3
.
Dewpoint range:
XTR-100 ........................-148°F to +68°F (-100°C to +20°C)
XTR-65 ..........................-85°F to +68°F (-65°C to +20°C).
Capacitance:......................15nF to 200nF.
Accuracy: ..........................±5.5°F (±3°C).
Repeatability: ....................±0.9°F (±0.5°C).
Response time: ..................see graph in Appendix I.
Temperature range: ...........-10°C to +70°C.
Sample Flow range:
(linear velocity @ 1ATM):Static to 100m/s.
Storage temperature: .........-40°F to+176°F (-40°C to +80°C).
Mechanical:.......................encapsulated in 100
µ
sintered stainless steel.
Calibration method: ..........SpanCheck™, sensor saturates at dewpoint above
+68°F (+20°C). NIST/NPL traceable multi-point
factory calibration available optionally.
2.3 Sensor Installation & Sampling Techniques
Keep in mind that the moisture content at the sensor is not
only due to the moisture of the gas being measured, but also
due to desorption of water from tubing, trapped moisture (at
the interconnection points, valves, filters and other hygro-
scopic materials in the system), leaks in the system, and oth-
ers. Thus the measurement may vary from the expectation,
and therefore care should be taken in choosing the sampling
technique utilized in the measurement. Factors such as gas
pressure, flow rate, materials of construction, length and