ABB MEASUREMENT & ANALY TICS | DATA SHEET 261GC, 261GG, 261GN and 261AC Gauge and Absolute transmitters with direct mount seal

Measurement made easy Engineered solutions for all applications — Featuring remote seal with capillary tube Base accuracy • ± 0.1 % — Span limits • 0.3 to 60000 kPa; 1.2 in H2O up to 8700 psi • 0.3 to 10000 kPa abs; 2.25 mmHg up to 1450 psia — Proven sensor technology together with state-of-the-art digital technology • Large turn down ratio of up to 20:1 — Stainless steel housing • Optimized for use in harsh ambient conditions • Extremely robust — Flexible configuration options • Local configuration via setup button for upper and lower range values • Local configuration via buttons on LCD indicator...

— General description For the transmitters 261Gx and 261Ax, process connections with flush diaphragms are available in a variety of designs and dimensions to meet the requirements of a wide range of sectors, including industries such as oil and gas, paper, chemicals, food and pharmaceuticals. Special filling fluids are available for applications with high temperatures. For hygienic applications or use in the food industry, select filling fluids that are classified by the US Food and Drug Administration (FDA) as safe for use with food. — Functional specification Measuring range limits and span...

— Operating limits Pressure limits Filling fluids The maximum permissible pressure depends on the permissible sensor overload (refer to table "Measuring range limits and span limits") and the permissible working pressure for the process connection according to the order information. Filling fluids (applications) Silicone oil for vacuum applications White oil for vacuum applications Temperature limits °C (°F) Environment Model 261GC, 261AC Ambient temperature limits Operating temperature range Process temperature in °C at maximum ambient temperature 40 °C Silicone oil for vacuum applications White...

ATEX transmitter with type of protection "intrinsic safety Ex ia/ib" in accordance with Directive 2014/34/UE Transmitter with 4 to 20 mA output signal and HART communication IECEx transmitter with the following types of protection: "intrinsic safety ia", "non sparking nA" and "dust ignition protection by enclosure tb" Transmitter with 4 to 20 mA output signal and HART communication Ex ia IIC T6 bzw. T4 Ga/Gb Ex ia IIIC T66°C bzw. T95°C Da/Db Ex nA IIC T6 bzw. T4 Gc Ex tb IIIC T66°C bzw. T95°C Db Permissible ambient temperature range according to temperature class: Ambient temperature Temperature...

— ...Operating limits Factory Mutual (FM) Transmitter with 4 to 20 mA output signal and HART communication Intrinsic Safety Class I; II and III; Division 1; Groups A, B, C, D; E, F, G Class I; Zone 0; AEx ia Group IIC T6; T4 Class I, II, III, Division 2; Groups A, B, C, D, F, G NEMA type 4X (indoor and outdoor installation) Canadian Standards Association (CSA) Transmitter with 4 to 20 mA output signal and HART communication Intrinsic Safety Class I; II and III; Division 1; Groups A, B, C, D; E, F, G Class I; Zone 0; Group IIC T6; T4 Class I, II, III; Division 2; Groups A, B, C, D; F, G NEMA type...

— Electrical data and options HART digital communication and 4 to 20 mA output Power supply The transmitter operates from 11 to 42 V DC with no load and is protected against reversed polarity (additional loads enable operation above 42 V DC). During use in Ex ia zones and in other intrinsically safe applications, the power supply must not exceed 30 V DC. Ripple Maximum permissible supply voltage ripple during communication: Complies with HART FSK “Physical Layer” specification rev. 8.1. Load limitations Total loop resistance at 4 to 20 mA and HART: R(kΩ) = Voltage sup ply − Minimum operating...

— Measuring accuracy Reference conditions according to IEC 60770 • Ambient temperature TU = constant in the range 18 to 30 °C (64 ... 86 °F) • Relative humidity = constant in the range 30 to 80 % • Ambient pressure PU = constant in the range 950 to 1,060 mbar. • Measuring span based on zero position • Transmitter with ceramic or Hastelloy separation diaphragm • Filling fluid: Silicone oil • Supply voltage: 24 V DC • Load with HART: 250 Ω • Transmitter not grounded • Characteristic setting: linear, 4 to 20 mA. Unless otherwise stated, errors are specified as a % of the measuring span value. The...

— Technical specification (Please refer to the order information to check the availability of different versions of the relevant model) Materials Separation diaphragms1 See order information Process connection1 See order information Filling fluid for process connection See order information Sensor filling fluid Silicone oil, inert filling (carbon fluoride), white oil (FDA) Optional extras LCD display Can be rotated in 90° increments into 4 positions Additional tag plates Code I1: AISI 316 ss wired-on plate with laser printed customized data (4 lines of 30 characters each). If no text is provided,...

— Configuration Transmitter with HART communication and 4 to 20 mA Standard configuration Transmitters are set to the customer's specified span at the factory. The set range and measuring point number are provided on the name plate. If this data has not been specified, the transmitter will be delivered with the following configuration: Parameter Factory setting Zero position Measuring range upper limit (URL) Transmitter failure mode Any or all of the configurable parameters listed above including the upper and lower range values - can easily be changed using the optional LCD indicator, a HART...

— Mounting dimensions (not design data) - dimensions in mm (inch) Standard design Space for removing cover required Housing cover Electrical connection (with cable gland) Pressure transmitter Filter for atmospheric compensation Grounding / equipotential bonding terminal (optional) M10281