1DESCRIPTION AND OPERATION
1.1 Application
1.1.1 EMIS-BAR pressure transmitters (hereinafter "transmitters") are designed for continu-
ous measurement of pressure (gauge, vacuum, absolute, hydrostatic and differential (pressure differ-
ence)) and conversion of the measured pressure into a rated DC output signal 4-20 mA overlapped
with digital HART signal, as well as displaying the measured value on the display.
EMIS-BAR pressure transmitters can be used in automatic control, adjustment and operation
systems at various industries.
1.1.2 Transmitters can be operated and adjusted using an inbuilt keyboard or remotely using
HART-compatible device.
1.1.3 Transmitters with HART can transfer information about measuring value in digital form
via the 2-wire connection line along with 4-20 mA current signal. Digital signal can be received and
converted by any HART-compatible device. Digital output is used to connect transmitter with portable
HART communicator or PC via standard serial interface and additional HART modem. The following
operation can be executed: setup transmitter, select main parameters, read measured pressure, etc.
HART-protocol allows two master devices be connected to the system: HART-compatible PC and
portable HART communicator. Transmitter can receive and execute commands of each of the control
devices with different addresses and exchanging data in the time sharing mode.
Measured value is displayed in selected units on the transmitter indicator or HART communi-
cator in measuring mode.
1.1.4 Transmitter meets the requirements of the technical regulations: TR CU 020/2011, TR
CU 032/2013.
1.1.5 Transmitter can be used for both safe and explosive environments.
Ex-proof transmitters comply with the technical regulations TR CU 012/2011.
Ex-proof transmitter intended for use in explosive environment of premises and outdoor instal-
lations according to GOST IEC 60079-14 as given in the chapter 7.3 of the Russian Electrical Code
and other normative documents designed for explosive environments.
Transmitters of Exd and RV configurations have flameproof enclosure "d" under GOST IEC
60079-1-2011, ex-proof design and intended for use in explosive environments hazardous with gas
mixtures and vapours of I, IIB, IIC, IIIB иIIIC categories.
Transmitters of ЕхiaC, ExiaB and RO configurations have explosion protection "intrinsically
safe circuit "i" under GOST 31610.11-2014, with increased explosion protection and intended for use
in explosive environments hazardous with gas mixtures and vapours with oxygen of I, IIB, IIC, IIIB,
IIIC categories.
Transmitters of Exdia and RVia configurations have explosion protection "flameproof enclo-
sure "d" under GOST IEC 60079-1-2011 and "intrinsically safe circuit "i" under GOST 31610.11-
2014, intended for use in explosive environments hazardous with gas mixtures and vapours with oxy-
gen of IIC category. Exdia configuration has protection level "increased flame protection". RVia con-
figuration has protection level "flameproof".
1.1.6 Please specify transmitter symbolic designation when placing order. Use Annex C for
reference.
If transmitter is mentioned in the documents related to other products, the following shall be
specified:
- transmitter symbolic designation;
- technical parameters: TU 26.51.52-080-14145564-2018.
1.1.7 See Annex D for mounting kit order codes. Drawings and mounting kit are shown in the
Annex F.
1.2 Specification
1.2.1 Type of measurement pressure, transmitter model, order codes, full range of pressure meas-
urement, min 𝑃𝑢 𝑚𝑖𝑛 and max 𝑃𝑢 𝑚𝑎𝑥 limit of measurement are specified in the Table 1.2.
1.2.2 Measurement range and upper limit can be adjusted to required values from 𝑃𝑙 𝑚𝑖𝑛 to
𝑃𝑢 𝑚𝑎𝑥, as provided in the Tables 1 and 2.
