Tohkemy Extronic Chemical Pump

Manufacturer: Tohkemy Corporation
Model: Extronic

Features

A pressure-resistant explosion-proof electromagnetically driven metering pump that can be used in explosion-proof areas.
It supports external pulse control and external analog signal (4 to 20mA DC) control, and is suitable for various processes including the gas and chemical industries.
Pressure-resistant explosion-proof structure: Obtained explosion-proof certification by the Industrial Safety Technology Association
(Certification number: TC18339 Explosion-proof grade and ignition degree: ExdⅡCT6)

Use

Grout in explosion-proof areas
Injecting odorant into gas pipes
Injection of pH regulator
Injection of hypochlorite fungicide
Injecting a small amount of volatile chemicals (ethanol, IPA, etc.)
Research / development and trial production equipment (trace drug injection)

Specification

General Specifications
Discharge Rate: 0.027 – 1,000 mL/min
Discharge Pressure: 0.15 – 2.5 MPa
Accuracy: ±2% (Standard wetted parts, recommended conditions)
Power Supply: Single-phase 100/200 VAC (50/60Hz). Custom overseas options available upon request.
Wetted Parts
Air Bleed Valve: Manual (hand knob) or Automatic (continuous air release).
Connections: Fits various hose sizes (e.g.,4 x 6, 9 x 12), threaded pipes, and flanges.
Safety Feature: Models 2501SSM and 2051SBM include diaphragm damage detection to prevent chemical leaks.
Drive & Control Options
External Signals:
Pulse: Stroke control via dry pulse signal (1 pulse = 1 stroke).
Analog: Proportional stroke control via 0/4–20mA DC signal.
Remote On/Off: Remote start/stop via dry contact input.
Protection Rating: IP65 enclosure suitable for outdoor use (Dust-tight: 6, Water jet-proof: 5).

Model specifications

Pump size	Maximum discharge pressure	Maximum discharge rate		1 stroke discharge amount	Maximum number of strokes	Suction lift	Standard connection diameter
Pump size	(MPa)	(l/h)	(ml/min)	(ml/str)	(spm)	(Water column m)	(Inner diameter x outer diameter mm)
1000	1.0	0.19	3.2	0.027	120	1.5	4×6
1601	1.6	1.0	16.7	0.14	120	6	4×6
1201	1.2	1.7	28.3	0.23	120	6	4×6
0803	0.8	3.7	61.7	0.51	120	3	4×6
1002	1.0	2.3	38.3	0.31	120	6	5×8
0308	0.3	8.6	143.3	1.20	120	6	5×8
1006	1.0	6	100.0	0.83	120	6	5×8
0613	0.6	13.1	218.3	1.59	120	6	5×8
1310	1.3	10.5	175.0	1.83	110	5.5	5×8	NP,PP4,SS,SB only
0814	0.8	14	233.3	2.12	110	6	9×12
0417	0.4	17.4	290	2.42	120	4.5	9×12
0430	0.4	27	450	4.09	110	5	DN10
0260	0.2	60	1,000	9.09	110	1.5	DN15
2501	2.5	1.14	19.0	0.15	120	6	4×6	SSM,SBM only
2502	2.5	2	33.3	0.28	120	6	5×8	SS,SB only
2505	2.5	4.2	70.0	0.64	110	6	5×8	SS,SB only

Wet contact material

Wetting part model	Pump head	Suction / injection valve	O-ring, seal	Valve ball	Standard connection
PP1	PP	PP	EPDM	Ceramic	Hose connection
PP4	PP	PP	EPDM	Ceramic	Hose connection
NP1	Acrylic	Acrylic	Viton A	Ceramic	Hose connection
NP3	Acrylic	Acrylic	Viton B	Ceramic	Hose connection
NS3	Acrylic	Acrylic	Viton B	Ceramic	Hose connection
PS3	PVC	PVC	PTFE	Ceramic	Hose connection
TT1	PTFE	PTFE	PTFE	Ceramic	Hose connection
SS1	SUS316	SUS316	PTFE	Ceramic(SUS316L)	SUS tube
SS2	SUS316	SUS316	PTFE	Ceramic(SUS316L)	Female NPT
SB1	SUS316	SUS316	PTFE	Ceramic(SUS316L)	Nemeji Rp
SSM	Same as SS1 ・ With diaphragm damage detection function 2501 type only				SUS tube
SBM	Same as SS1 ・ With diaphragm damage detection function 2501 type only				Female screw Rp