OPT100 technical specification - OPT100

OPT100 User Guide

Document code
M211858EN
Revision
N
Language
English (United States)
Product
OPT100
Document type
User guide
Table 1. OPT100 measurement specification
Parameter Range Accuracy 1 2 Repeatability 2
Methane (CH4) 0 … 10 000 ppmv ±4 ppm or ±5 % of reading 10 ppm or 5 % of reading
Ethane (C2H6) 0 … 10 000 ppmv ±10 ppm or ±5 % of reading 10 ppm or 5 % of reading 3
Ethylene (C2H4) 0 … 10 000 ppmv ±4 ppm or ±5 % of reading 10 ppm or 5 % of reading
Acetylene (C2H2) 0 … 5000 ppmv ±0.5 ppm or ±5 % of reading 1 ppm or 5 % of reading
Carbon monoxide (CO) 0 … 10 000 ppmv ±4 ppm or ±5 % of reading 10 ppm or 5 % of reading
Carbon dioxide (CO2) 0 … 10 000 ppmv ±4 ppm or ±5 % of reading 10 ppm or 5 % of reading
Hydrogen (H2) 0 … 5000 ppmv ±15 ppm or ±10 % of reading 15 ppm or 10 % of reading
Moisture 4 (H2O) 0 … 100 ppmw 5 ±2 ppm 6 or ±10 % of reading Included in accuracy
Total gas pressure 0 … 2000 hPa ±10 hPa or ±2 % of reading 10 hPa or 5 % of reading
Table 2. OPT100 measurement operation
Property Description/Value
Measurement cycle duration 1 … 1.5 h (typical)
Response time (T63) One measurement cycle 7
Warm-up time until first measurement data available Two measurement cycles
Initialization time to full accuracy Two days
Data storage At least 10 years
Expected operating life > 15 years
Table 3. OPT100 field performance
Parameter Typical variance to laboratory DGA8
Acetylene (C2H2) ±1 ppm or ±10 % of reading
Hydrogen (H2) ±15 ppm or ±15 % of reading
Other measured gases ±10 ppm or ±10 % of reading
Moisture (H2O) ±2 ppm or ±10 % of reading
Table 4. OPT100 calculated parameters
Property Description/Value
Total dissolved combustible gases (TDCG) Combined total of H2, CO, CH4, C2H6, C2H4, and C2H2
24 h average Available for single gases, moisture, TDCG, and total gas pressure
Rate of change (ROC) Available for single gases and TDCG for 24 h, 7 d, and 30 d periods
Gas ratios 9

Available ratios:

  • CH4/H2
  • C2H2/C2H4
  • C2H2/CH4
  • C2H6/C2H2
  • C2H4/C2H6
  • CO2/CO
Table 5. OPT100 operating environment
Property Description/Value
Transformer oil type Mineral oil
Required minimum fire point 10 of transformer oil +125 °C (+257 °F)
Transformer oil pressure at oil inlet

Max. 2 barabs continuous

Burst pressure 20 barabs

Transformer oil temperature at oil inlet Max. +100 °C (+212 °F)
Ambient humidity range 0 … 100 %RH, condensing
Ambient temperature range in operation −40 … +55 °C (−40 … +131 °F)
Storage temperature range −40 … +60 °C (−40 … +140 °F)

IP rating

IP66: Dust-tight. Protected from powerful water jets from any direction.

Table 6. OPT100 power supply
Property Description/Value
Operating voltage OPTPSU1: 100 … 240 V AC, 50 … 60 Hz, ±10 %
Overvoltage category III
Maximum current consumption 10 A
Maximum power consumption 500 W
Typical power consumption at +25 °C (+77 °F) 100 W
Connector

Screw terminals (inside power supply unit)

Wire size 2.5 … 4 mm2 (14 … 12 AWG)

Table 7. OPT100 outputs
Property Description/Value
RS-485 interface
Connector

Screw terminals (inside OPT100 housing)

Wire size 0.5 …  4 mm2 (20 … 12 AWG)

Supported protocols Modbus RTU, DNP3 (optional feature)
Galvanic isolation 2 kV RMS, 1 min
Ethernet interface
Connector Industrial RJ45 connector with protective plug (outside OPT100 housing)
Supported protocols Modbus TCP, HTTP, HTTPS, DNP3 (optional feature), IEC 61850 (optional feature)
Standard IEEE 802.3
Physical layer Base-T
Data rate 10/100 Mbps
Galvanic isolation 4 kV AC (50 Hz, 1 min)
Insulation voltage 250 Vrms
Relay outputs
Number of relays 3 pcs, normally open (NO) or normally closed (NC), user selectable
Trigger type Gas alert with user selectable limits
Connector

Screw terminals (inside power supply unit housing)

Wire size 0.5 … 4 mm2 (20 … 12 AWG)

Max. switching current

6 A (at 250 V AC)

2 A (at 24 V DC)

0.2 A (at 250 V DC)

Min. switching voltage 12 V DC (at 10 mA)
Min. switching current 10 mA (at 12 V)
Contact type 1 PDT
User interface
Interface type Web based user interface, can be operated with standard web browsers
Connector for service use RJ45 connector, inside OPT100 housing (temporary local use only)
Table 8. OPT100 mechanical specifications
Property Description/Value
Oil fitting

Stainless steel Swagelok® fitting for 10 mm (0.39 in) outer diameter tubing.

See list of accessories for adapters available from Vaisala.

Max. length of oil pipe to transformer

Max. 10 m (33 ft) with 7 mm (0.28 in) inner diameter tubing

Max. 5 m (16 ft) with 4 mm (0.15 in) inner diameter tubing

Recommended oil pipe properties

10 mm (0.39 in) outer diameter

1 … 1.5 mm wall thickness

Material stainless steel

Dimensions (H × W × D)
Installed with ground mounting set and weather shield 1630 × 675 × 453 mm (64 × 27 × 18 in)
Installed with wall mounting set and weather shield 1390 × 675 × 467 mm (55 × 27 × 18 in)
Weight
OPT100 DGA Monitor 35 kg (77 lb)
OPTPSU Power Supply Unit 12 kg (27 lb)
OPTMSET1 Wall mounting set 8 kg (18 lb)
OPTMSET2 Ground mounting set 16 kg (35 lb)
OPTSHLD1 Weather shield 6 kg (13 lb)
Materials
OPT100 DGA Monitor housing Marine aluminum (EN AW-5754), stainless steel AISI 316
OPTPSU Power Supply Unit housing Stainless steel AISI 316
OPTMSET1 Wall Mounting Set Stainless steel AISI 316
OPTMSET2 Ground Mounting Set Stainless steel
OPTSHLD1 Weather Shield Marine aluminum (EN AW-5754)
Materials in contact with oil
Oil pipes, chambers, and valves Aluminum (EN AW 6026), stainless steel AISI 316, brass
Gaskets and seals NBR, FKM, FVMQ
Pump gears and bushing PEEK/PTFE
Table 9. OPT100 compliance
Property Description/Value

EU directives and regulations

EMC Directive (2014/30/EU)

Low Voltage Directive (2014/35/EU)

OPT100 is specifically designed to be installed as part of another type of equipment that is excluded from the RoHS directive (2011/65/EU) scope.

EMC immunity

EN 61326‑1, industrial environment

IEC 61000-6-5, class 4

EMC emissions

FCC 47 CFR 15, section 15.107, class A

ISED ICES-003, section 5(a)(i), class A

Safety

IEC/EN/UL/CSA 61010‑1

Environmental

ISO 6270-1:2017, constant humidity condensation atmosphere, C5-M

ISO 9227:2017, salt fog, C5-M

Compliance marks

CE, China RoHS, EAC, RCM
1 Accuracy specified is the accuracy of the sensors during calibration gas measurements.
2 Whichever is greater.
3 Repeatability of ethane measurement is specified with averaging of five measurements.
4 Measured as relative saturation (%RS).
5 Upper range limited to saturation.
6 Calculated ppm value is based on average solubility of mineral oils.
7 Three cycles for ethane and hydrogen.
8 Compared with gas chromatography result from an oil sample considering also laboratory uncertainty. Performance of the gas-in-oil measurement may also be affected by oil properties and other chemical compounds dissolved in oil.
9 Calculated from 24 h average values. See standard IEC 60599.
10 The fire point [of transformer oil] is normally approximately 10 °C [18 °F] higher than the closed flash point. See, for example, Heathcote, Martin J. The J & P Transformer Book. 13th ed. Elsevier, 2007.