罗美特（上海）自动化仪表股份有限公司

The MTRM Series Roots flowmeter is a wide range and high precision flowmeter, which designed and developed by ourselves on the basis of absorbing the advantages of imported products. The product integrates the functions of machinery, termperature and pressure correction, remote transmission, recharge,valve control into one assembly. The product is mainly used in gas metering for industrial and commercial users.The product is exquisite and beautiful in appearance, whose performance is leading position in the industry, with a variety of specification.
The product’s mechanical performance is stable. Range ratio can reach 1:300. Initial flow rate is 0.04m³/h. Intergrated Mechanica counting, Temperature and Pressure correction, Remote transmission, Recharge, Valve control into one assembly. Integrated circuit and low efficiency design. The battary life can last more than 3 years, and the memery can store data for 12 months ( a set of data per hour). The meter head can rotate freely and easy to reading data

Specificati	Flow Rang	Flange OD	Pressure Loss	Flange Distance	Length
Specificati	m3/h	mm	kPa	mm	mm
MTRM40A(Z)	0.32-16	DN40	0.1	171	438
MTRM40B(Z)	0.5-25	DN40	0.1	171	438
MTRM40C(Z)	0.5-40	DN40	0.1	171	463
MTRM50A(Z)	0.65-65	DN50	0.15	171	489
MTRM50B(Z)	0.67-100	DN50	0.24	171	545
MTRM80A(Z)	0.8-160	DN80	0.26	171	582
MTRM100A(Z)	1.25-250	DN100	0.32	241	575
MTRM100B(Z)	2-400	DN100	0.53	241	653
MTRM100C(Z)	3.25-650	DN100	0.75	271	744
MTRM150A(Z)	3.5-700	DN150	0.76	406	804
MTRM150B(Z)	5-1000	DN150	0.77	406	920
MTRM200A(Z)	8-1600	DN200	0.78	406	1020
Remarks ： 1. Nominal pressur: PN1.6Mpa, standard pressure sensor 0.5Mpa, any special requirement need to send new request when send orders. 2. All products is according to the requirement of grade 1.5, 1.0 3. Smart roots flowmeter’s specification has the lettle “Z” and Mechanical flowmeter has no lettle “Z”.

型号规格	流量规格	通径 DN (mm）	A		A1		H1	H	B	D	K	n	d
型号规格	流量规格	通径 DN (mm）	一字双显	机械双显	一字双显	机械双显	双显	机械一体	B	D	K	n	d
MTRM-40A	G10	DN40	438	326	142	112	325	140	155	150	110	4	M16×40
MTRM-40B	G16	DN40	438	326	142	112	325	140	155	150	110	4	M16×40
MTRM-40C	G25	DN40	463	351	155	125	325	140	155	150	110	4	M16×40
MTRM-50A	G40	DN50	489	381	170	141	345	171	165	165	125	4	M16×45
MTRM-50B	G65	DN50	545	437	198	169	345	171	165	165	125	4	M16×45
MTRM-80A	G100	DN80	582	474	216	187	345	171	165	200	160	8	M16×45
MTRM-100A	G160	DN100	575	468	214	181	418	241	252	220	180	8	M16×50
MTRM-100B	G250	DN100	653	546	253	220	418	241	252	220	180	8	M16×50
MTRM-100C	G400	DN100	744	637	309	276	418	241	252	220	180	8	M16×50
MTRM-150A	G400	DN150	804	692	304	280	532	406	432	285	240	8	M20×65
MTRM-150B	G650	DN150	920	808	362	337	532	406	432	285	240	8	M20×65
MTRM-200A	G1000	DN200	1020	908	412	387	532	406	432	340	295	12	M20×75

1: strictly prohibit the flow meter on-line welding pipe flange.
2: Before and after installation of flowmeter, the pipeline should be purged, and the impurities such as welding slag, iron scraps and sand in the pipeline should be thoroughly removed (special attention should be paid to removing impurities in the elbow of flowmeter before vertical installation), so as to avoid foreign matter entering and damaging the flowmeter, and the inner wall of the pipeline should be clean and free of fouling.
3: In order to facilitate regular maintenance and weekly inspection of flowmeters, it is recommended to set up bypass pipelines (the bypass pipeline valves should be locked in normal operation).
4: before installing the meter, check whether the rotor is flexible.
5: Seals should not be protruded into the pipeline during installation. There is no deviation between the inlet and outlet axes of the flowmeter and the connecting pipeline.
6: When the flowmeter is installed horizontally, it is recommended to install a steel expander (compensator) after the flowmeter. The expander must meet the requirements of nominal diameter and nominal pressure of pipeline design. The telescopic device is used to compensate for the stress of the pipeline and facilitate the installation and disassembly of the flowmeter.
7: After installation, air tightness test should be carried out on the pipeline to strictly check the air tightness of the pipeline. For auxiliary technical equipment equipped with pressure compensator, attention should be paid to the pressure range of the pressure testing equipment in order to avoid damaging the pressure measuring components.
8: When installing the flowmeter, we should pay attention to the flow direction of the flowmeter is consistent with the flow direction of the gas, and strictly examine the use conditions and installation environment conditions of the flowmeter.
9: there is no strong external magnetic field disturbance and strong mechanical vibration around the flowmeter.
10: the flowmeter with volume correction device must be reliably grounded, but it must not be shared with the strong power system ground wire.
11: there should be no corrosive gas to the aluminum alloy at the installation site.
12: When additional power supply is needed, it must be in accordance with the requirements of the corrector, otherwise it will damage the instrument or cause safety problems.
13: After the flowmeter has been installed correctly, before entering the normal operation, the corresponding type of lubricant should be added to the flowmeter according to the requirements, and the quality and quantity of oil should be checked regularly during the operation. Replace and replenish lubricating oil in time to ensure the normal operation of the flowmeter.
14: The valve before and after flowmeter should be opened and closed slowly during operation, so as to avoid sudden change of instantaneous flow rate and damage flowmeter.
15: The operation of upstream gas filters should be checked regularly during operation, and the filter elements should be cleaned or replaced when necessary.
16: In order to ensure the normal use of flowmeters, attention should be paid to and prevention of overpressure and overflow of flowmeters during operation.