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1．安全柵應安裝在安全場所，并且環(huán)境條件滿足《安全柵選型樣本》中的“使用條件”的要求。
2． 隔離式安全柵本安端（藍色端）和非本安端電路的連接導線在匯線槽中應分開鋪設，各自采用獨立的保護套管。本安側的配線管道內不允許有其它電源線，包括其本安電路使用的電源線。
3．通往危險場所的導線應選用有藍色標記的本安導線，導線的軟銅面積必須大于0.5mm2，絕緣強度應大于500V。
4． 在對隔離式安全柵進行通電調試前，必須注意隔離式安全柵的型號、接線方法、線路極性等是否符合設計及產品要求中的規(guī)定，否則可能對人身及設備造成傷害。
5．嚴禁用兆歐表測試隔離式安全柵端子之間的絕緣強度。如要檢查系統(tǒng)的絕緣強度，應先斷開全部隔離式安全柵的接線，否則可能引起安全柵內部電路損壞。
6． 在現(xiàn)場對安全柵進行編程前，必須先將所有接線斷開再接入編程器，然后通電編程，否則可能引起不良后果。
7．與隔離式安全柵相連接的現(xiàn)場儀表，均應采用通過經(jīng)國家認定的有關防爆檢驗部門進行防爆試驗、并取得防爆合格證的儀表。
8． 在設計、安裝、使用、維護隔離式安全柵時，應同時遵守本產品使用手冊中的說明及《GB3836.15-2000爆炸性氣體環(huán)境用電氣設備第15部分：危險場所電氣安裝（煤礦除外）》及
《GB50058-1992爆炸和火災危險環(huán)境電力設置設計規(guī)范 》。
產品直通車
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- MTL5074 TEMPERATURE CONVERTER THC or RTD input The MTL5074 converts a low-level dc signal from a temperature sensor mounted in a hazardous area into a 4/20mA current for driving a safe-area load. Software selectable features include lineari
MTL5074 TEMPERATURE
CONVERTER
THC or RTD input
The MTL5074 converts a low-level dc signal from a temperature sensor
mounted in a hazardous area into a 4/20mA current for driving a
safe-area load. Software selectable features include linearisation,
ranging, monitoring, testing and tagging for eight thermocouple
types and 2-, 3- or 4-wire RTDs. For thermocouples requiring coldjunction compensation, the HAZ-CJC plug can be ordered with the
product, and includes an integral CJC sensor.
A personal computer running MTL PCS45 software with a PCL45
interface.
TO ORDER, specify:
MTL5074 Includes HAZ-CJC signal plug (with internal CJC
sensor). For use with thermocouple, mV or RTD inputs.
MTL5074-RTD Includes standard HAZ1-3 signal plug. For use
with mV or RTD inputs. (Can be used with
thermocouples with cold-junction compensation if
HAZ-CJC plug is fitted.)
HAZ-CJC Hazardous-area signal plug for terminals 1 to 3
including cold-junction compensation sensor.
CONVERTER
THC or RTD input
The MTL5074 converts a low-level dc signal from a temperature sensor
mounted in a hazardous area into a 4/20mA current for driving a
safe-area load. Software selectable features include linearisation,
ranging, monitoring, testing and tagging for eight thermocouple
types and 2-, 3- or 4-wire RTDs. For thermocouples requiring coldjunction compensation, the HAZ-CJC plug can be ordered with the
product, and includes an integral CJC sensor.
A personal computer running MTL PCS45 software with a PCL45
interface.
TO ORDER, specify:
MTL5074 Includes HAZ-CJC signal plug (with internal CJC
sensor). For use with thermocouple, mV or RTD inputs.
MTL5074-RTD Includes standard HAZ1-3 signal plug. For use
with mV or RTD inputs. (Can be used with
thermocouples with cold-junction compensation if
HAZ-CJC plug is fitted.)
HAZ-CJC Hazardous-area signal plug for terminals 1 to 3
including cold-junction compensation sensor.
SPECIFICATION
See also common specification
Number of channels
One
Signal source
Types J, K, T, E, R, S, B or N THCs to BS 4937
EMF input
2/3/4-wire platinum RTDs to BS 1904/DIN43760 (100? at 0°C)
Location of signal source
Zone 0, IIC, T4 hazardous area
Div.1, Group A, hazardous location
Input signal range
–75 to +75mV, or 0 to 400? (Input impedance 10M?)
Input signal span
3 to 150mV, or 10 to 400?
RTD excitation current
200µA nominal
Cold junction compensation
Automatic or selectable
Cold junction compensation error
≤1.0°C
Common mode rejection
120dB for 240V at 50Hz or 60Hz
Series mode rejection
40dB for 50Hz or 60Hz
Calibration accuracy (at 20°C)
(includes hysteresis, non-linearity and repeatability)
Inputs:
mV/THC: ±15µV or ±0.05% of input value
(whichever is greater)
RTD: ±80m?
Output: ±11µA
Temperature drift (typical)
Inputs:
mV/THC: ±0.003% of input value/°C
RTD: ±7m?/°C
Output: ±0.6µA/°C
Example of calibration accuracy and temperature drift
(RTD input)
Span: 250?
Accuracy: ± (0.08/250 + 11/16000) x 100%
=0.1% of span
Temperature drift: ± (0.007/250 x 16000 + 0.6) µA/°C
= ±1.0µA/°C
Safety drive on sensor burnout
Upscale, downscale, or off
Output range
4 to 20mA nominal (direct or reverse)
Maximum load resistance
600?
LED indicator
Green: one provided for power and status indication
Power requirement, Vs with 20mA signal
68mA at 24V
82mA at 20V
52mA at 35V
Power dissipation within unit with 20mA signal
1.5W at 24V
1.6W at 35V
See also common specification
Number of channels
One
Signal source
Types J, K, T, E, R, S, B or N THCs to BS 4937
EMF input
2/3/4-wire platinum RTDs to BS 1904/DIN43760 (100? at 0°C)
Location of signal source
Zone 0, IIC, T4 hazardous area
Div.1, Group A, hazardous location
Input signal range
–75 to +75mV, or 0 to 400? (Input impedance 10M?)
Input signal span
3 to 150mV, or 10 to 400?
RTD excitation current
200µA nominal
Cold junction compensation
Automatic or selectable
Cold junction compensation error
≤1.0°C
Common mode rejection
120dB for 240V at 50Hz or 60Hz
Series mode rejection
40dB for 50Hz or 60Hz
Calibration accuracy (at 20°C)
(includes hysteresis, non-linearity and repeatability)
Inputs:
mV/THC: ±15µV or ±0.05% of input value
(whichever is greater)
RTD: ±80m?
Output: ±11µA
Temperature drift (typical)
Inputs:
mV/THC: ±0.003% of input value/°C
RTD: ±7m?/°C
Output: ±0.6µA/°C
Example of calibration accuracy and temperature drift
(RTD input)
Span: 250?
Accuracy: ± (0.08/250 + 11/16000) x 100%
=0.1% of span
Temperature drift: ± (0.007/250 x 16000 + 0.6) µA/°C
= ±1.0µA/°C
Safety drive on sensor burnout
Upscale, downscale, or off
Output range
4 to 20mA nominal (direct or reverse)
Maximum load resistance
600?
LED indicator
Green: one provided for power and status indication
Power requirement, Vs with 20mA signal
68mA at 24V
82mA at 20V
52mA at 35V
Power dissipation within unit with 20mA signal
1.5W at 24V
1.6W at 35V
1．安全柵應安裝在安全場所，并且環(huán)境條件滿足《安全柵選型樣本》中的“使用條件”的要求。
2． 隔離式安全柵本安端（藍色端）和非本安端電路的連接導線在匯線槽中應分開鋪設，各自采用獨立的保護套管。本安側的配線管道內不允許有其它電源線，包括其本安電路使用的電源線。
3．通往危險場所的導線應選用有藍色標記的本安導線，導線的軟銅面積必須大于0.5mm2，絕緣強度應大于500V。
4． 在對隔離式安全柵進行通電調試前，必須注意隔離式安全柵的型號、接線方法、線路極性等是否符合設計及產品要求中的規(guī)定，否則可能對人身及設備造成傷害。
5．嚴禁用兆歐表測試隔離式安全柵端子之間的絕緣強度。如要檢查系統(tǒng)的絕緣強度，應先斷開全部隔離式安全柵的接線，否則可能引起安全柵內部電路損壞。
6． 在現(xiàn)場對安全柵進行編程前，必須先將所有接線斷開再接入編程器，然后通電編程，否則可能引起不良后果。
7．與隔離式安全柵相連接的現(xiàn)場儀表，均應采用通過經(jīng)國家認定的有關防爆檢驗部門進行防爆試驗、并取得防爆合格證的儀表。
8． 在設計、安裝、使用、維護隔離式安全柵時，應同時遵守本產品使用手冊中的說明及《GB3836.15-2000爆炸性氣體環(huán)境用電氣設備第15部分：危險場所電氣安裝（煤礦除外）》及
《GB50058-1992爆炸和火災危險環(huán)境電力設置設計規(guī)范 》。
Isolation
250V ac between safe- and hazardous-area circuits and power
supply
Safety description
Terminals 1 and 3
i) Without CJ plug
Vout = 1.1V
I
out = 7mA
P
out = 2mW
Non-energy-storing apparatus ≤1.2V, ≤0.1A, ≤20µJ and ≤25mW.
Can be connected without further certification into any IS loop
with open-circuit voltage not more than 10V.
ii) With CJ plug
Vout = 6.6V, Iout = 10mA
P
out = 17mW
Terminals 1 and 3, 4 and 5
Vout = 6.6V, Iout = 76mA, Pout = 0.13W
Configuration socket (CON6)
Vout = 8.3V, Iout = 15mA, Pout = 26mW
Standard configuration
Input type RTD, 3-wire
Linearisation enabled
CJ Compensation disabled
Units °C
Damping/Smoothing value 0 seconds/0 seconds
Output zero 0°C
Output span 250°C
Tag and description fields blank
Open circuit alarm set high (upscale)
Transmitter failure alarm set low (downscale)
CJ failure alarm set low (downscale)
Line frequency 50Hz
Configurator
A personal computer running MTL PCS45 software with a PCL45
interface.
250V ac between safe- and hazardous-area circuits and power
supply
Safety description
Terminals 1 and 3
i) Without CJ plug
Vout = 1.1V
I
out = 7mA
P
out = 2mW
Non-energy-storing apparatus ≤1.2V, ≤0.1A, ≤20µJ and ≤25mW.
Can be connected without further certification into any IS loop
with open-circuit voltage not more than 10V.
ii) With CJ plug
Vout = 6.6V, Iout = 10mA
P
out = 17mW
Terminals 1 and 3, 4 and 5
Vout = 6.6V, Iout = 76mA, Pout = 0.13W
Configuration socket (CON6)
Vout = 8.3V, Iout = 15mA, Pout = 26mW
Standard configuration
Input type RTD, 3-wire
Linearisation enabled
CJ Compensation disabled
Units °C
Damping/Smoothing value 0 seconds/0 seconds
Output zero 0°C
Output span 250°C
Tag and description fields blank
Open circuit alarm set high (upscale)
Transmitter failure alarm set low (downscale)
CJ failure alarm set low (downscale)
Line frequency 50Hz
Configurator
A personal computer running MTL PCS45 software with a PCL45
interface.
產品直通車
? 2021 上海亨沃電氣設備有限公司 版權所有 網(wǎng)站建設備案/許可證號：滬ICP備19017057號-1
地址:上海市滬太路5355弄綠地北郊廣場10號605室?電話:021-56519159
地址:上海市滬太路5355弄綠地北郊廣場10號605室?電話:021-56519159
